#28213B
Closest named color: Oxford Blue (#1B263B). oklch(26.9% 0.048 295.4), rgb(40, 33, 59).
Aa
White text reads best on this color (15.31:1).
About this color
#28213B is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.048 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 15.31:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.31:1 |
Values
| HEX | #28213B |
| RGB | rgb(40, 33, 59) |
| HSL | hsl(256, 28%, 18%) |
| OKLCH | oklch(26.9% 0.048 295.4) |
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 #28213B | 15.31:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #28213B | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #28213B text on white | 15.31:1 | AAA | Lc 102.2 | Preferred for body text |
| #28213B 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#DAD5EC
oklch(88.4% 0.032 295.7)
-
Step 300
300
#C3BAE2
oklch(80.9% 0.057 295.4)
-
Step 400
400
#A595D4
oklch(70.7% 0.092 295.6)
-
Step 500
500
#8F7AC8
oklch(63.1% 0.116 295.2)
-
Step 600
600
#7A62B5
oklch(55.7% 0.127 295.3)
-
Step 700
700
#67519B
oklch(49.2% 0.116 295.5)
-
Step 800
800
#54427E
oklch(42.7% 0.098 295.8)
-
Step 900
900
#453865
oklch(37.6% 0.076 295.8)
-
Step 950
950 (this color)
#28213B
oklch(26.9% 0.048 295.4)
#28213B 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) | #1A253C | 0.026 |
| Deuteranopia (no green cones) | #1B253A | 0.025 |
| Tritanopia (no blue cones) | #24262B | 0.040 |
| Achromatopsia (no color) | #252525 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28213B
#28213B
oklch(26.9% 0.048 295.4)
- #25290B
#25290B
oklch(26.9% 0.048 116.1)
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 #28213B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Dark #1B2431 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.039
- Jet #212529 ΔE 0.043
- Gunmetal #293241 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.061
- Eggplant #380835 ΔE 0.067
- Dark Purple #35063E ΔE 0.069
Use #28213B 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.