#212B6D
Closest named color: Marine (#042E60). oklch(32.4% 0.114 271.9), rgb(33, 43, 109).
Aa
White text reads best on this color (12.87:1).
About this color
#212B6D is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.114 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.037 away. White text reads best on it, at 12.87:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.63:1 |
| White text | 12.87:1 |
Values
| HEX | #212B6D |
| RGB | rgb(33, 43, 109) |
| HSL | hsl(232, 54%, 28%) |
| OKLCH | oklch(32.4% 0.114 271.9) |
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 #212B6D | 12.87:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #212B6D | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #212B6D text on white | 12.87:1 | AAA | Lc 98.7 | Preferred for body text |
| #212B6D 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEF9
oklch(81% 0.086 271.9)
-
Step 400
400
#839AF6
oklch(70.8% 0.137 271.9)
-
Step 500
500
#667DF2
oklch(63% 0.176 272.1)
-
Step 600
600
#4F63E1
oklch(55.6% 0.192 271.8)
-
Step 700
700
#4151C3
oklch(49% 0.178 272.1)
-
Step 800
800
#35439E
oklch(42.6% 0.148 272)
-
Step 900
900 (this color)
#212B6D
oklch(32.4% 0.114 271.9)
-
Step 950
950
#1A2349
oklch(27.1% 0.071 270.9)
#212B6D 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) | #00356F | 0.034 |
| Deuteranopia (no green cones) | #002E6C | 0.029 |
| Tritanopia (no blue cones) | #003B47 | 0.095 |
| Achromatopsia (no color) | #323232 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212B6D
#212B6D
oklch(32.4% 0.114 271.9)
- #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 #212B6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.037
- Marine Blue #01386A ΔE 0.042
- Midnight Blue #191970 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.069
- Royal #0C1793 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.079
- Dark Blue Grey #1F3B4D ΔE 0.081
Use #212B6D 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.