#28243A
Closest named color: Oxford Blue (#1B263B). oklch(27.5% 0.04 291.9), rgb(40, 36, 58).
Aa
White text reads best on this color (14.96:1).
About this color
#28243A is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.040 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.022 away. White text reads best on it, at 14.96:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.040) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.96:1 |
Values
| HEX | #28243A |
| RGB | rgb(40, 36, 58) |
| HSL | hsl(251, 23%, 18%) |
| OKLCH | oklch(27.5% 0.04 291.9) |
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 #28243A | 14.96:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #28243A | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #28243A text on white | 14.96:1 | AAA | Lc 101.8 | Preferred for body text |
| #28243A text on black | 1.40:1 | 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
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#D9D6EA
oklch(88.4% 0.027 292.7)
-
Step 300
300
#C1BCDE
oklch(81% 0.048 292)
-
Step 400
400
#A198CD
oklch(70.6% 0.077 292.1)
-
Step 500
500
#8A7EC0
oklch(63% 0.098 291.7)
-
Step 600
600
#7567AC
oklch(55.7% 0.106 291.9)
-
Step 700
700
#625594
oklch(49.1% 0.099 291.8)
-
Step 800
800
#504678
oklch(42.7% 0.082 291.7)
-
Step 900
900
#423B61
oklch(37.7% 0.064 291.5)
-
Step 950
950 (this color)
#28243A
oklch(27.5% 0.04 291.9)
#28243A 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) | #1E273B | 0.018 |
| Deuteranopia (no green cones) | #1E2639 | 0.018 |
| Tritanopia (no blue cones) | #24282C | 0.034 |
| Achromatopsia (no color) | #272727 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28243A
#28243A
oklch(27.5% 0.04 291.9)
- #282A11
#282A11
oklch(27.6% 0.041 112.8)
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 #28243A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.022
- Dark #1B2431 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.031
- Jet #212529 ΔE 0.037
- Gunmetal #293241 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.067
- Eggplant #380835 ΔE 0.075
Use #28243A 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.