#2481AB
Closest named color: Blue NCS (#118AB2). oklch(57% 0.105 233), rgb(36, 129, 171).
Aa
Black text reads best on this color (4.80:1).
About this color
#2481AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.105 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.025 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.80:1 |
| White text | 4.37:1 |
Values
| HEX | #2481AB |
| RGB | rgb(36, 129, 171) |
| HSL | hsl(199, 65%, 41%) |
| OKLCH | oklch(57% 0.105 233) |
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 #2481AB | 4.37:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #2481AB | 4.80:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #2481AB text on white | 4.37:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #2481AB text on black | 4.80:1 | AA | Lc -31.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6FA9C8
oklch(70.6% 0.076 232.7)
-
Step 500
500
#4593BB
oklch(63.1% 0.097 233.6)
-
Step 600
600 (this color)
#2481AB
oklch(57% 0.105 233)
-
Step 700
700
#0C698F
oklch(49.1% 0.098 233.2)
-
Step 800
800
#115674
oklch(42.7% 0.081 232.8)
-
Step 900
900
#18475E
oklch(37.7% 0.064 233.4)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#2481AB 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) | #6C80AD | 0.067 |
| Deuteranopia (no green cones) | #5A73AA | 0.057 |
| Tritanopia (no blue cones) | #008C8F | 0.064 |
| Achromatopsia (no color) | #797979 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2481AB
#2481AB
oklch(57% 0.105 233)
- #A76437
#A76437
oklch(56.9% 0.105 52.9)
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 #2481AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.025
- Nice Blue #107AB0 ΔE 0.026
- Steel Blue #4682B4 ΔE 0.030
- Cerulean #457B9D ΔE 0.030
- Teal Blue #01889F ΔE 0.033
- Cool Blue #4984B8 ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.040
Use #2481AB 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.