#28243F
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.049 289.6), rgb(40, 36, 63).
Aa
White text reads best on this color (14.84:1).
About this color
#28243F is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.049 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.024 away. White text reads best on it, at 14.84:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.84:1 |
Values
| HEX | #28243F |
| RGB | rgb(40, 36, 63) |
| HSL | hsl(249, 27%, 19%) |
| OKLCH | oklch(27.8% 0.049 289.6) |
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 #28243F | 14.84:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #28243F | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #28243F text on white | 14.84:1 | AAA | Lc 101.7 | Preferred for body text |
| #28243F text on black | 1.41:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#BFBBE4
oklch(80.9% 0.057 289.5)
-
Step 400
400
#9F97D7
oklch(70.7% 0.093 289.5)
-
Step 500
500
#887CCC
oklch(63.1% 0.119 289.4)
-
Step 600
600
#7364B9
oklch(55.6% 0.129 289.6)
-
Step 700
700
#6052A0
oklch(49% 0.122 289.4)
-
Step 800
800
#4F4481
oklch(42.8% 0.099 289.9)
-
Step 900
900
#413A68
oklch(37.8% 0.077 289.1)
-
Step 950
950 (this color)
#28243F
oklch(27.8% 0.049 289.6)
#28243F 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) | #1C2840 | 0.022 |
| Deuteranopia (no green cones) | #1C273E | 0.022 |
| Tritanopia (no blue cones) | #23292E | 0.041 |
| Achromatopsia (no color) | #272727 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28243F
#28243F
oklch(27.8% 0.049 289.6)
- #2A2A0A
#2A2A0A
oklch(27.7% 0.049 109.2)
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 #28243F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.030
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.046
- Gunmetal #293241 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.068
- Marine #042E60 ΔE 0.070
Use #28243F 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.