#212433
Closest named color: Dark (#1B2431). oklch(26.4% 0.028 275.5), rgb(33, 36, 51).
Aa
White text reads best on this color (15.38:1).
About this color
#212433 is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.011 away. White text reads best on it, at 15.38:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.36:1 |
| White text | 15.38:1 |
Values
| HEX | #212433 |
| RGB | rgb(33, 36, 51) |
| HSL | hsl(230, 21%, 16%) |
| OKLCH | oklch(26.4% 0.028 275.5) |
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 #212433 | 15.38:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #212433 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #212433 text on white | 15.38:1 | AAA | Lc 102.3 | Preferred for body text |
| #212433 text on black | 1.36:1 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E6
oklch(88.4% 0.019 276.3)
-
Step 300
300
#BABFD7
oklch(80.8% 0.034 276.3)
-
Step 400
400
#979EC3
oklch(70.7% 0.055 276.5)
-
Step 500
500
#7D86B3
oklch(63% 0.069 275.5)
-
Step 600
600
#67709F
oklch(55.7% 0.074 275.4)
-
Step 700
700
#555D88
oklch(49% 0.07 275.4)
-
Step 800
800
#464C6F
oklch(42.6% 0.059 276.2)
-
Step 900
900
#3B405A
oklch(37.8% 0.045 275.6)
-
Step 950
950 (this color)
#212433
oklch(26.4% 0.028 275.5)
#212433 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) | #202534 | 0.004 |
| Deuteranopia (no green cones) | #1E2433 | 0.005 |
| Tritanopia (no blue cones) | #1C2729 | 0.026 |
| Achromatopsia (no color) | #252525 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212433
#212433
oklch(26.4% 0.028 275.5)
- #292515
#292515
oklch(26.4% 0.028 95.8)
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 #212433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.011
- Oxford Blue #1B263B ΔE 0.017
- Jet #212529 ΔE 0.021
- Space Cadet #2B2D42 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.049
- Gunmetal #293241 ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.076
- Midnight Green #073B4C ΔE 0.079
Use #212433 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.