#0C81DA
Closest named color: Water Blue (#0E87CC). oklch(59.3% 0.163 249.8), rgb(12, 129, 218).
Aa
Black text reads best on this color (5.16:1).
About this color
#0C81DA is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.163 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #0C81DA |
| RGB | rgb(12, 129, 218) |
| HSL | hsl(206, 90%, 45%) |
| OKLCH | oklch(59.3% 0.163 249.8) |
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 #0C81DA | 4.06:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #0C81DA | 5.16:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #0C81DA text on white | 4.06:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #0C81DA text on black | 5.16:1 | AA | Lc -34.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9DC5EF
oklch(80.9% 0.073 250)
-
Step 400
400
#64A6E7
oklch(70.8% 0.117 249.5)
-
Step 500
500
#328DE0
oklch(63% 0.151 250)
-
Step 600
600 (this color)
#0C81DA
oklch(59.3% 0.163 249.8)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#0B4373
oklch(37.6% 0.099 250.1)
-
Step 950
950
#0A2843
oklch(27% 0.061 249.3)
#0C81DA 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) | #5487DE | 0.050 |
| Deuteranopia (no green cones) | #3176D8 | 0.030 |
| Tritanopia (no blue cones) | #0097A3 | 0.118 |
| Achromatopsia (no color) | #7E7E7E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C81DA
#0C81DA
oklch(59.3% 0.163 249.8)
- #AE6E00
#AE6E00
oklch(59.3% 0.129 69.9)
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 #0C81DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Windows Blue #3778BF ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.051
- Clear Blue #247AFD ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.061
- Cool Blue #4984B8 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.065
- Nice Blue #107AB0 ΔE 0.065
Use #0C81DA 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.