#5F6DB0Loch Ness (#5F6DB0) is a mid-tone, soft blue with an OKLCH hue of 274°, lightness 0.55 and chroma 0.106. It sits on the cool side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #5F6DB0 |
|---|---|
| RGB | rgb(95, 109, 176) |
| HSL | hsl(230, 34%, 53%) |
| HSV | hsv(230, 46%, 69%) |
| CMYK | cmyk(46%, 38%, 0%, 31%) |
| CIE Lab | lab(47.6 13 -37.4) |
| OKLCH | oklch(0.553 0.106 274) |
Under warm 2700K interior light Loch Ness shifts subtly: leans toward purple, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.9), so it is a lighting-stable choice.
#666ba5 — ΔE 1.9, shifts subtly: leans toward purple, loses intensity#646ead — ΔE 0.9, shifts subtly: leans toward purple#5f6db0 — ΔE 0.0, is virtually unchanged#5f6db2 — ΔE 0.3, is virtually unchangedTest Loch Ness in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.
Against white it measures 4.88:1 and against black 4.3:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text.
One color explored: close hues with real lightness and chroma structure, so the palette is the anchor through value rather than a set of colors.
#b7c5fd · #8f9dda · #5f6db0 · #475390 · #293166 · #0f123f
The anchor's neighbours on the wheel — everything shares an undertone, so the chord carries color without anything having to be muted to get along.
#679dc5 · #6086bc · #5f6db0 · #615795 · #5d4378 · #54305b
The mid-gap pairing — sage and mustard, terracotta and olive. A foil rotated 40–65° toward warm or cool: too far to be kin, too near to argue, carried by temperature and a deliberate value offset.
#d297d3 · #a185a2 · #5f6db0 · #465288 · #2e3767 · #301731
One deliberately opposed voice — a single restrained counterpoint across the wheel, or temperature against temperature where the anchor is too muted to carry a loud opposite.
#dbc371 · #8d92a7 · #5f6db0 · #495174 · #2d3451 · #161a2d
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f5f2e7 · #898d9a · #5f6db0 · #5b5952 · #202431 · #010100
This color as a ground rather than a subject — its own restraint held across a narrow value band, carrying one saturated voice from the opposite temperature.
#f5f2e6 · #cfcbbe · #a5a192 · #322d1a · #110b00 · #5f6db0
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#f9f2da · #9e8c4e · #5f6db0 · #6b5700 · #2e2300 · #01000c
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#f9f2da · #b28255 · #5f6db0 · #4d6211 · #391c00 · #010200
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffede9 · #bb7a6b · #5f6db0 · #19693c · #002e14 · #070000
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf0 · #b97788 · #5f6db0 · #6b5700 · #002c27 · #0a0500
#7583BF · #8C99CE · #A3AFDD · #BCC6EC · #D5DDFB
#4D5995 · #3C467B · #2B3462 · #1C224A · #0E1233
#636FA3 · #677097 · #6B7189
Its moderate chroma lets it work in mid-size areas — upholstery, secondary UI surfaces, editorial blocks — without overwhelming neighbors. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.