#212931
Closest named color: Jet (#212529). oklch(27.7% 0.019 248.5), rgb(33, 41, 49).
Aa
White text reads best on this color (14.72:1).
About this color
#212931 is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.017 away. White text reads best on it, at 14.72:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.42:1 |
| White text | 14.72:1 |
Values
| HEX | #212931 |
| RGB | rgb(33, 41, 49) |
| HSL | hsl(210, 20%, 16%) |
| OKLCH | oklch(27.7% 0.019 248.5) |
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 #212931 | 14.72:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #212931 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #212931 text on white | 14.72:1 | AAA | Lc 101.6 | Preferred for body text |
| #212931 text on black | 1.42:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B6C2CF
oklch(80.9% 0.023 250.3)
-
Step 400
400
#90A3B6
oklch(70.7% 0.035 248.3)
-
Step 500
500
#748CA4
oklch(63% 0.046 248.6)
-
Step 600
600
#5D768F
oklch(55.6% 0.049 248.7)
-
Step 700
700
#4C637A
oklch(49% 0.046 248.8)
-
Step 800
800
#3F5163
oklch(42.7% 0.038 248.7)
-
Step 900
900
#354351
oklch(37.6% 0.03 248.6)
-
Step 950
950 (this color)
#212931
oklch(27.7% 0.019 248.5)
#212931 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) | #262931 | 0.008 |
| Deuteranopia (no green cones) | #242731 | 0.008 |
| Tritanopia (no blue cones) | #1C2B2C | 0.016 |
| Achromatopsia (no color) | #282828 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212931
#212931
oklch(27.7% 0.019 248.5)
- #2E271E
#2E271E
oklch(27.8% 0.019 73.9)
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 #212931, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.017
- Dark #1B2431 ΔE 0.021
- Oxford Blue #1B263B ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.037
- Gunmetal #293241 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.061
- Midnight Green #073B4C ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.068
Use #212931 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.