#00BFFFDeep Sky Blue (#00BFFF) is a light, saturated sky blue with an OKLCH hue of 232°, lightness 0.76 and chroma 0.153. It sits on the cool side of the color wheel. In practice it behaves as an accent color: strong in focal moments, dominant over large fields.
| HEX | #00BFFF |
|---|---|
| RGB | rgb(0, 191, 255) |
| HSL | hsl(195, 100%, 50%) |
| HSV | hsv(195, 100%, 100%) |
| CMYK | cmyk(100%, 25%, 0%, 0%) |
| CIE Lab | lab(72.5 -17.7 -42.5) |
| OKLCH | oklch(0.755 0.153 232) |
Under warm 2700K interior light Deep Sky Blue shifts noticeably: loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.5), so it is a lighting-stable choice.
#42bbf0 — ΔE 2.5, shifts noticeably: loses intensity#2dc0fa — ΔE 1.2, shifts only faintly, with no single dominant change#00bfff — ΔE 0.0, is virtually unchanged#00c0ff — ΔE 0.3, is virtually unchangedAgainst white it measures 2.12:1 and against black 9.9:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid white text on this color entirely.
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.
#e3f5ff · #82d5ff · #00bfff · #0088b7 · #006285 · #003e56
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.
#63eef4 · #2ed8fa · #00bfff · #4aa3f0 · #6188da · #6b6fbe
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.
#00bfff · #8a8bbf · #007ea9 · #4f44a7 · #00425b · #1f1a49
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.
#b5d9ec · #00bfff · #d46e21 · #327696 · #155571 · #0f3648
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#feeee5 · #00bfff · #8298a4 · #615751 · #102833 · #040100
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.
#fbefe8 · #d6c9c1 · #ae9e96 · #3c2a20 · #1a0902 · #00bfff
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d3dbb7 · #00bfff · #bf6521 · #5e639a · #4d2f34 · #040a32
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeee4 · #00bfff · #d57372 · #745200 · #4c000a · #0d0500
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf3 · #00bfff · #cc729c · #5b5e00 · #262700 · #0a0003
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#fcebff · #00bfff · #b679c1 · #8c4100 · #012e00 · #1b0500
#54C9FF · #7AD3FF · #99DCFF · #B6E6FF · #D0EFFF
#009CD2 · #007BA6 · #005B7C · #003D55 · #002231
#52BDEF · #73BADE · #8CB7CD
Its chroma is high enough to carry accents, calls to action, and focal moments; large fields of it will dominate a composition. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.