#212B6E
Closest named color: Marine (#042E60). oklch(32.4% 0.116 271.9), rgb(33, 43, 110).
Aa
White text reads best on this color (12.84:1).
About this color
#212B6E is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.116 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.038 away. White text reads best on it, at 12.84:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.63:1 |
| White text | 12.84:1 |
Values
| HEX | #212B6E |
| RGB | rgb(33, 43, 110) |
| HSL | hsl(232, 54%, 28%) |
| OKLCH | oklch(32.4% 0.116 271.9) |
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 #212B6E | 12.84:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #212B6E | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #212B6E text on white | 12.84:1 | AAA | Lc 98.6 | Preferred for body text |
| #212B6E text on black | 1.63:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEFA
oklch(80.9% 0.087 271.4)
-
Step 400
400
#829AF7
oklch(70.8% 0.139 271.5)
-
Step 500
500
#657DF3
oklch(63% 0.178 271.8)
-
Step 600
600
#4F63E2
oklch(55.6% 0.193 271.8)
-
Step 700
700
#4051C4
oklch(49.1% 0.179 271.7)
-
Step 800
800
#35439F
oklch(42.7% 0.149 272)
-
Step 900
900 (this color)
#212B6E
oklch(32.4% 0.116 271.9)
-
Step 950
950
#1A224A
oklch(26.9% 0.075 272)
#212B6E 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) | #003570 | 0.034 |
| Deuteranopia (no green cones) | #002F6D | 0.029 |
| Tritanopia (no blue cones) | #003B48 | 0.094 |
| Achromatopsia (no color) | #323232 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212B6E
#212B6E
oklch(32.4% 0.116 271.9)
- #403200
#403200
oklch(32.3% 0.066 91.6)
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 #212B6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.038
- Marine Blue #01386A ΔE 0.042
- Midnight Blue #191970 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.068
- Royal #0C1793 ΔE 0.078
- Space Cadet #2B2D42 ΔE 0.081
- Dark Blue Grey #1F3B4D ΔE 0.083
Use #212B6E 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.