#212633
Closest named color: Dark (#1B2431). oklch(27% 0.025 268.3), rgb(33, 38, 51).
Aa
White text reads best on this color (15.11:1).
About this color
#212633 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.013 away. White text reads best on it, at 15.11:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.38:1 |
| White text | 15.11:1 |
Values
| HEX | #212633 |
| RGB | rgb(33, 38, 51) |
| HSL | hsl(223, 21%, 16%) |
| OKLCH | oklch(27% 0.025 268.3) |
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 #212633 | 15.11:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #212633 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #212633 text on white | 15.11:1 | AAA | Lc 102.0 | Preferred for body text |
| #212633 text on black | 1.38:1 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B8C0D5
oklch(80.8% 0.031 269.1)
-
Step 400
400
#94A0BF
oklch(70.7% 0.047 268.5)
-
Step 500
500
#7A89AF
oklch(63.2% 0.06 267.9)
-
Step 600
600
#63729B
oklch(55.6% 0.067 268.7)
-
Step 700
700
#525F84
oklch(49% 0.062 269.1)
-
Step 800
800
#434E6C
oklch(42.7% 0.052 268.6)
-
Step 900
900
#384157
oklch(37.7% 0.04 267.2)
-
Step 950
950 (this color)
#212633
oklch(27% 0.025 268.3)
#212633 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) | #222734 | 0.004 |
| Deuteranopia (no green cones) | #202533 | 0.004 |
| Tritanopia (no blue cones) | #1C292A | 0.024 |
| Achromatopsia (no color) | #262626 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212633
#212633
oklch(27% 0.025 268.3)
- #2B2618
#2B2618
oklch(27% 0.025 90.7)
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 #212633, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.013
- Oxford Blue #1B263B ΔE 0.017
- Jet #212529 ΔE 0.018
- Space Cadet #2B2D42 ΔE 0.038
- Gunmetal #293241 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.072
- Midnight Green #073B4C ΔE 0.074
Use #212633 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.