#2C81AA
Closest named color: Blue NCS (#118AB2). oklch(57.1% 0.101 233.8), rgb(44, 129, 170).
Aa
Black text reads best on this color (4.82:1).
About this color
#2C81AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.101 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.026 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.82:1 |
| White text | 4.34:1 |
Values
| HEX | #2C81AA |
| RGB | rgb(44, 129, 170) |
| HSL | hsl(200, 59%, 42%) |
| OKLCH | oklch(57.1% 0.101 233.8) |
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 #2C81AA | 4.34:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #2C81AA | 4.82:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #2C81AA text on white | 4.34:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #2C81AA text on black | 4.82:1 | AA | Lc -31.9 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A9C7
oklch(70.8% 0.073 233)
-
Step 500
500
#4993B9
oklch(63.2% 0.093 233.3)
-
Step 600
600 (this color)
#2C81AA
oklch(57.1% 0.101 233.8)
-
Step 700
700
#17698E
oklch(49.2% 0.094 233.8)
-
Step 800
800
#175673
oklch(42.8% 0.078 233.2)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112A36
oklch(27.1% 0.038 231.3)
#2C81AA 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) | #6D80AC | 0.064 |
| Deuteranopia (no green cones) | #5C74A9 | 0.053 |
| Tritanopia (no blue cones) | #008C8F | 0.063 |
| Achromatopsia (no color) | #797979 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C81AA
#2C81AA
oklch(57.1% 0.101 233.8)
- #A6663A
#A6663A
oklch(57.2% 0.102 53.7)
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 #2C81AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.026
- Cerulean #457B9D ΔE 0.027
- Steel Blue #4682B4 ΔE 0.027
- Nice Blue #107AB0 ΔE 0.029
- Teal Blue #01889F ΔE 0.033
- Cool Blue #4984B8 ΔE 0.034
- Stormy Blue #507B9C ΔE 0.034
- Dull Blue #49759C ΔE 0.039
Use #2C81AA 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.