#20283B
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.037 266.5), rgb(32, 40, 59).
Aa
White text reads best on this color (14.70:1).
About this color
#20283B is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.037 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.011 away. White text reads best on it, at 14.70:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.42:1 |
| White text | 14.70:1 |
Values
| HEX | #20283B |
| RGB | rgb(32, 40, 59) |
| HSL | hsl(222, 30%, 18%) |
| OKLCH | oklch(27.8% 0.037 266.5) |
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 #20283B | 14.70:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #20283B | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #20283B text on white | 14.70:1 | AAA | Lc 101.5 | Preferred for body text |
| #20283B 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C1DE
oklch(81% 0.043 266.3)
-
Step 400
400
#8CA0CD
oklch(70.7% 0.07 266)
-
Step 500
500
#7088C0
oklch(63.1% 0.089 266.1)
-
Step 600
600
#5971AD
oklch(55.6% 0.098 266.7)
-
Step 700
700
#495E94
oklch(49% 0.091 266.9)
-
Step 800
800
#3C4D78
oklch(42.6% 0.075 266.8)
-
Step 900
900
#334161
oklch(37.8% 0.058 265.6)
-
Step 950
950 (this color)
#20283B
oklch(27.8% 0.037 266.5)
#20283B 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) | #212A3C | 0.007 |
| Deuteranopia (no green cones) | #1F273B | 0.004 |
| Tritanopia (no blue cones) | #172C2F | 0.033 |
| Achromatopsia (no color) | #282828 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20283B
#20283B
oklch(27.8% 0.037 266.5)
- #302712
#302712
oklch(27.7% 0.037 86.8)
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 #20283B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.011
- Dark #1B2431 ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.028
- Jet #212529 ΔE 0.033
- Gunmetal #293241 ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.062
- Midnight Green #073B4C ΔE 0.064
Use #20283B 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.