#006381
Closest named color: Peacock Blue (#016795). oklch(46.6% 0.09 227.4), rgb(0, 99, 129).
Aa
White text reads best on this color (6.77:1).
About this color
#006381 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.090 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.033 away. White text reads best on it, at 6.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.10:1 |
| White text | 6.77:1 |
Values
| HEX | #006381 |
| RGB | rgb(0, 99, 129) |
| HSL | hsl(194, 100%, 25%) |
| OKLCH | oklch(46.6% 0.09 227.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #006381 | 6.77:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #006381 | 3.10:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #006381 text on white | 6.77:1 | AA | Lc 82.8 | Fine for body text |
| #006381 text on black | 3.10:1 | AA large text | Lc -19.1 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400
#71AAC3
oklch(70.8% 0.07 227.4)
-
Step 500
500
#4794B4
oklch(63.1% 0.09 227.9)
-
Step 600
600
#217EA0
oklch(55.6% 0.098 227.8)
-
Step 700
700 (this color)
#006381
oklch(46.6% 0.09 227.4)
-
Step 800
800
#14576F
oklch(42.8% 0.075 227.2)
-
Step 900
900
#19485A
oklch(37.8% 0.059 226.9)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#006381 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #536182 | 0.065 |
| Deuteranopia (no green cones) | #445781 | 0.056 |
| Tritanopia (no blue cones) | #006C6D | 0.050 |
| Achromatopsia (no color) | #5B5B5B | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006381
#006381
oklch(46.6% 0.09 227.4)
- #82482A
#82482A
oklch(46.5% 0.09 46.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #006381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.033
- Petrol #005F6A ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.038
- Denim #3B638C ΔE 0.042
- Dark Aqua #05696B ΔE 0.046
- YInMn Blue #415A77 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.054
Use #006381 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.