#212333
Closest named color: Dark (#1B2431). oklch(26.2% 0.03 278.6), rgb(33, 35, 51).
Aa
White text reads best on this color (15.52:1).
About this color
#212333 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.030 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.011 away. White text reads best on it, at 15.52:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.35:1 |
| White text | 15.52:1 |
Values
| HEX | #212333 |
| RGB | rgb(33, 35, 51) |
| HSL | hsl(233, 21%, 16%) |
| OKLCH | oklch(26.2% 0.03 278.6) |
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 #212333 | 15.52:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #212333 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #212333 text on white | 15.52:1 | AAA | Lc 102.5 | Preferred for body text |
| #212333 text on black | 1.35:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD8
oklch(80.9% 0.035 278.4)
-
Step 400
400
#989EC4
oklch(70.8% 0.056 277.8)
-
Step 500
500
#7F85B6
oklch(63.1% 0.074 278.6)
-
Step 600
600
#696EA1
oklch(55.5% 0.079 279.2)
-
Step 700
700
#575C8A
oklch(49% 0.074 278.5)
-
Step 800
800
#474B70
oklch(42.6% 0.062 278.7)
-
Step 900
900
#3C3F5B
oklch(37.7% 0.048 279.1)
-
Step 950
950 (this color)
#212333
oklch(26.2% 0.03 278.6)
#212333 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) | #1E2534 | 0.008 |
| Deuteranopia (no green cones) | #1D2333 | 0.007 |
| Tritanopia (no blue cones) | #1C2629 | 0.026 |
| Achromatopsia (no color) | #242424 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212333
#212333
oklch(26.2% 0.03 278.6)
- #282513
#282513
oklch(26.2% 0.031 100)
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 #212333, 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 0.022
- Space Cadet #2B2D42 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.047
- Gunmetal #293241 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.078
- Dark Brown #341C02 ΔE 0.081
Use #212333 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.