#2B81AE
Closest named color: Steel Blue (#4682B4). oklch(57.3% 0.106 236.1), rgb(43, 129, 174).
Aa
Black text reads best on this color (4.85:1).
About this color
#2B81AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.106 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.024 away. Black text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #2B81AE |
| RGB | rgb(43, 129, 174) |
| HSL | hsl(201, 60%, 43%) |
| OKLCH | oklch(57.3% 0.106 236.1) |
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 #2B81AE | 4.32:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #2B81AE | 4.85:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #2B81AE text on white | 4.32:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #2B81AE text on black | 4.85:1 | AA | Lc -32.0 | 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
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CA
oklch(70.6% 0.076 236.5)
-
Step 500
500
#4892BC
oklch(63% 0.097 236)
-
Step 600
600 (this color)
#2B81AE
oklch(57.3% 0.106 236.1)
-
Step 700
700
#156891
oklch(49.1% 0.099 236.5)
-
Step 800
800
#165575
oklch(42.7% 0.081 235.9)
-
Step 900
900
#1A465F
oklch(37.6% 0.064 237)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#2B81AE 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) | #6B80B0 | 0.062 |
| Deuteranopia (no green cones) | #5A74AD | 0.052 |
| Tritanopia (no blue cones) | #008D90 | 0.069 |
| Achromatopsia (no color) | #797979 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B81AE
#2B81AE
oklch(57.3% 0.106 236.1)
- #A76635
#A76635
oklch(57.2% 0.105 55.6)
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 #2B81AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.024
- Blue NCS #118AB2 ΔE 0.025
- Nice Blue #107AB0 ΔE 0.026
- Cerulean #457B9D ΔE 0.031
- Cool Blue #4984B8 ΔE 0.031
- Stormy Blue #507B9C ΔE 0.038
- Teal Blue #01889F ΔE 0.038
- Off Blue #5684AE ΔE 0.039
Use #2B81AE 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.