#21232D
Closest named color: Dark (#1B2431). oklch(25.9% 0.019 276.1), rgb(33, 35, 45).
Aa
White text reads best on this color (15.63:1).
About this color
#21232D is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.012 away. White text reads best on it, at 15.63:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.34:1 |
| White text | 15.63:1 |
Values
| HEX | #21232D |
| RGB | rgb(33, 35, 45) |
| HSL | hsl(230, 15%, 15%) |
| OKLCH | oklch(25.9% 0.019 276.1) |
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 #21232D | 15.63:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #21232D | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #21232D text on white | 15.63:1 | AAA | Lc 102.6 | Preferred for body text |
| #21232D text on black | 1.34:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D7D9E2
oklch(88.6% 0.012 276.1)
-
Step 300
300
#BCC0D0
oklch(81% 0.023 274.7)
-
Step 400
400
#9A9FB8
oklch(70.7% 0.037 276.5)
-
Step 500
500
#8188A6
oklch(63.2% 0.046 274.7)
-
Step 600
600
#6B7191
oklch(55.6% 0.05 276.4)
-
Step 700
700
#595F7B
oklch(49.1% 0.046 275.2)
-
Step 800
800
#494D64
oklch(42.6% 0.039 276.9)
-
Step 900
900
#3D4052
oklch(37.6% 0.031 277.4)
-
Step 950
950 (this color)
#21232D
oklch(25.9% 0.019 276.1)
#21232D 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) | #20242D | 0.004 |
| Deuteranopia (no green cones) | #1F232D | 0.003 |
| Tritanopia (no blue cones) | #1E2526 | 0.018 |
| Achromatopsia (no color) | #232323 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21232D
#21232D
oklch(25.9% 0.019 276.1)
- #262419
#262419
oklch(25.9% 0.02 99)
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 #21232D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.012
- Jet #212529 ΔE 0.012
- Oxford Blue #1B263B ΔE 0.026
- Rich Black #0D1B2A ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Gunmetal #293241 ΔE 0.058
- Dark Brown #341C02 ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.085
Use #21232D 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.