#212431
Closest named color: Dark (#1B2431). oklch(26.3% 0.025 274.5), rgb(33, 36, 49).
Aa
White text reads best on this color (15.42:1).
About this color
#212431 is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.010 away. White text reads best on it, at 15.42:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.36:1 |
| White text | 15.42:1 |
Values
| HEX | #212431 |
| RGB | rgb(33, 36, 49) |
| HSL | hsl(229, 20%, 16%) |
| OKLCH | oklch(26.3% 0.025 274.5) |
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 #212431 | 15.42:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #212431 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #212431 text on white | 15.42:1 | AAA | Lc 102.4 | Preferred for body text |
| #212431 text on black | 1.36:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D9E4
oklch(88.6% 0.015 273.8)
-
Step 300
300
#BAC0D4
oklch(80.9% 0.029 272.4)
-
Step 400
400
#979FBF
oklch(70.7% 0.048 274.1)
-
Step 500
500
#7E87AE
oklch(63% 0.06 274.5)
-
Step 600
600
#67719A
oklch(55.7% 0.065 273.5)
-
Step 700
700
#565E83
oklch(49% 0.06 274.6)
-
Step 800
800
#464D6B
oklch(42.7% 0.051 273.9)
-
Step 900
900
#3B4057
oklch(37.7% 0.04 274.8)
-
Step 950
950 (this color)
#212431
oklch(26.3% 0.025 274.5)
#212431 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) | #202532 | 0.004 |
| Deuteranopia (no green cones) | #1F2431 | 0.003 |
| Tritanopia (no blue cones) | #1D2628 | 0.022 |
| Achromatopsia (no color) | #252525 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212431
#212431
oklch(26.3% 0.025 274.5)
- #292517
#292517
oklch(26.5% 0.025 94.1)
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 #212431, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.010
- Jet #212529 ΔE 0.017
- Oxford Blue #1B263B ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.048
- Gunmetal #293241 ΔE 0.053
- Dark Brown #341C02 ΔE 0.077
- Prussian Blue #1D3557 ΔE 0.078
Use #212431 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.