#20243C
Closest named color: Oxford Blue (#1B263B). oklch(26.9% 0.045 275.7), rgb(32, 36, 60).
Aa
White text reads best on this color (15.22:1).
About this color
#20243C is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.045 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.010 away. White text reads best on it, at 15.22:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.22:1 |
Values
| HEX | #20243C |
| RGB | rgb(32, 36, 60) |
| HSL | hsl(231, 30%, 18%) |
| OKLCH | oklch(26.9% 0.045 275.7) |
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 #20243C | 15.22:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #20243C | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #20243C text on white | 15.22:1 | AAA | Lc 102.1 | Preferred for body text |
| #20243C text on black | 1.37:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BEE4
oklch(80.8% 0.054 275.8)
-
Step 400
400
#919CD6
oklch(70.6% 0.086 275.7)
-
Step 500
500
#7783CB
oklch(63.1% 0.109 275.6)
-
Step 600
600
#616CB8
oklch(55.7% 0.118 275.7)
-
Step 700
700
#50599E
oklch(49% 0.11 275.9)
-
Step 800
800
#424980
oklch(42.6% 0.091 276.3)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950 (this color)
#20243C
oklch(26.9% 0.045 275.7)
#20243C 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) | #1C273D | 0.011 |
| Deuteranopia (no green cones) | #1A243B | 0.010 |
| Tritanopia (no blue cones) | #17292D | 0.040 |
| Achromatopsia (no color) | #262626 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20243C
#20243C
oklch(26.9% 0.045 275.7)
- #2D2609
#2D2609
oklch(26.9% 0.045 95.6)
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 #20243C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.010
- Dark #1B2431 ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.037
- Jet #212529 ΔE 0.037
- Gunmetal #293241 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.066
- Marine #042E60 ΔE 0.070
Use #20243C 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.