#212455
Closest named color: Marine (#042E60). oklch(28.8% 0.087 276.8), rgb(33, 36, 85).
Aa
White text reads best on this color (14.50:1).
About this color
#212455 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.087 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.040 away. White text reads best on it, at 14.50:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.44:1 |
| White text | 14.50:1 |
Values
| HEX | #212455 |
| RGB | rgb(33, 36, 85) |
| HSL | hsl(237, 44%, 23%) |
| OKLCH | oklch(28.8% 0.087 276.8) |
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 #212455 | 14.50:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #212455 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #212455 text on white | 14.50:1 | AAA | Lc 101.1 | Preferred for body text |
| #212455 text on black | 1.44:1 | 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 950.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FF
oklch(88.6% 0.056 276.3)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8995FF
oklch(70.7% 0.154 276.8)
-
Step 500
500
#6F76FF
oklch(63.2% 0.2 276.8)
-
Step 600
600
#5956F5
oklch(55.6% 0.23 276.7)
-
Step 700
700
#4A45D6
oklch(49.2% 0.214 276.6)
-
Step 800
800
#3C3AAC
oklch(42.7% 0.176 276.7)
-
Step 900
900
#323488
oklch(37.7% 0.137 276.6)
-
Step 950
950 (this color)
#212455
oklch(28.8% 0.087 276.8)
#212455 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) | #072B57 | 0.032 |
| Deuteranopia (no green cones) | #002754 | 0.035 |
| Tritanopia (no blue cones) | #052F38 | 0.077 |
| Achromatopsia (no color) | #292929 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212455
#212455
oklch(28.8% 0.087 276.8)
- #332A00
#332A00
oklch(28.6% 0.059 96.5)
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 #212455, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.052
- Midnight Blue #191970 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.062
- Gunmetal #293241 ΔE 0.065
- Marine Blue #01386A ΔE 0.067
Use #212455 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.