#0081CA
Closest named color: Water Blue (#0E87CC). oklch(58.2% 0.145 244.6), rgb(0, 129, 202).
Aa
Black text reads best on this color (4.99:1).
About this color
#0081CA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.145 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.018 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #0081CA |
| RGB | rgb(0, 129, 202) |
| HSL | hsl(202, 100%, 40%) |
| OKLCH | oklch(58.2% 0.145 244.6) |
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 #0081CA | 4.20:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #0081CA | 4.99:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #0081CA text on white | 4.20:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #0081CA text on black | 4.99:1 | AA | Lc -33.3 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCF0
oklch(88.4% 0.036 245.7)
-
Step 300
300
#9DC6E8
oklch(80.9% 0.065 243.7)
-
Step 400
400
#65A7DD
oklch(70.6% 0.104 244.7)
-
Step 500
500
#3390D4
oklch(63.1% 0.134 244.7)
-
Step 600
600 (this color)
#0081CA
oklch(58.2% 0.145 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#0B456C
oklch(37.7% 0.087 244.5)
-
Step 950
950
#0A293F
oklch(27.1% 0.054 243.5)
#0081CA 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) | #5D84CD | 0.059 |
| Deuteranopia (no green cones) | #4274C9 | 0.042 |
| Tritanopia (no blue cones) | #00939C | 0.100 |
| Achromatopsia (no color) | #7B7B7B | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0081CA
#0081CA
oklch(58.2% 0.145 244.6)
- #AF6700
#AF6700
oklch(58.1% 0.131 64.3)
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 #0081CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.018
- Windows Blue #3778BF ΔE 0.031
- Nice Blue #107AB0 ΔE 0.041
- Steel Blue #4682B4 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.047
- Blue NCS #118AB2 ΔE 0.051
- Flat Blue #3C73A8 ΔE 0.060
- Dark Sky Blue #448EE4 ΔE 0.063
Use #0081CA 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.