#212937
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.028 261.5), rgb(33, 41, 55).
Aa
White text reads best on this color (14.61:1).
About this color
#212937 is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Oxford Blue (#1B263B), ΔE 0.018 away. White text reads best on it, at 14.61:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.61:1 |
Values
| HEX | #212937 |
| RGB | rgb(33, 41, 55) |
| HSL | hsl(218, 25%, 17%) |
| OKLCH | oklch(28% 0.028 261.5) |
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 #212937 | 14.61:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #212937 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #212937 text on white | 14.61:1 | AAA | Lc 101.4 | Preferred for body text |
| #212937 text on black | 1.43:1 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E6
oklch(88.4% 0.019 263)
-
Step 300
300
#B5C1D7
oklch(80.9% 0.034 262.7)
-
Step 400
400
#8EA1C3
oklch(70.6% 0.054 262)
-
Step 500
500
#728AB4
oklch(63.1% 0.069 261.4)
-
Step 600
600
#5B749F
oklch(55.7% 0.074 261)
-
Step 700
700
#4A6188
oklch(49.1% 0.069 260.7)
-
Step 800
800
#3D4F6F
oklch(42.7% 0.058 261.6)
-
Step 900
900
#34425A
oklch(37.7% 0.045 261)
-
Step 950
950 (this color)
#212937
oklch(28% 0.028 261.5)
#212937 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) | #242A38 | 0.006 |
| Deuteranopia (no green cones) | #222837 | 0.004 |
| Tritanopia (no blue cones) | #1A2C2E | 0.025 |
| Achromatopsia (no color) | #292929 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212937
#212937
oklch(28% 0.028 261.5)
- #302718
#302718
oklch(27.8% 0.029 79.9)
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 #212937, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.018
- Dark #1B2431 ΔE 0.022
- Jet #212529 ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.029
- Gunmetal #293241 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.063
- Midnight Green #073B4C ΔE 0.063
Use #212937 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.