#212D37
Closest named color: Gunmetal (#293241). oklch(29.1% 0.025 243.9), rgb(33, 45, 55).
Aa
White text reads best on this color (14.04:1).
About this color
#212D37 is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.027 away. White text reads best on it, at 14.04:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.49:1 |
| White text | 14.04:1 |
Values
| HEX | #212D37 |
| RGB | rgb(33, 45, 55) |
| HSL | hsl(207, 25%, 17%) |
| OKLCH | oklch(29.1% 0.025 243.9) |
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 #212D37 | 14.04:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #212D37 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #212D37 text on white | 14.04:1 | AAA | Lc 100.7 | Preferred for body text |
| #212D37 text on black | 1.49:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#88A4BC
oklch(70.6% 0.047 244.4)
-
Step 500
500
#6A8EAB
oklch(63.1% 0.059 243.2)
-
Step 600
600
#527897
oklch(55.7% 0.065 243.9)
-
Step 700
700
#426581
oklch(49.2% 0.061 243.6)
-
Step 800
800
#375269
oklch(42.7% 0.05 245.1)
-
Step 900
900
#304455
oklch(37.7% 0.039 244.7)
-
Step 950
950 (this color)
#212D37
oklch(29.1% 0.025 243.9)
#212D37 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) | #292D37 | 0.013 |
| Deuteranopia (no green cones) | #262B37 | 0.010 |
| Tritanopia (no blue cones) | #1A2F30 | 0.020 |
| Achromatopsia (no color) | #2C2C2C | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212D37
#212D37
oklch(29.1% 0.025 243.9)
- #34291F
#34291F
oklch(29% 0.024 63.9)
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 #212D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.027
- Oxford Blue #1B263B ΔE 0.030
- Jet #212529 ΔE 0.032
- Dark #1B2431 ΔE 0.033
- Midnight Green #073B4C ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.053
- Onyx #343A40 ΔE 0.056
Use #212D37 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.