#281839
Closest named color: Oxford Blue (#1B263B). oklch(24.8% 0.063 304.6), rgb(40, 24, 57).
Aa
White text reads best on this color (16.40:1).
About this color
#281839 is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.063 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.047 away. White text reads best on it, at 16.40:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.40:1 |
Values
| HEX | #281839 |
| RGB | rgb(40, 24, 57) |
| HSL | hsl(269, 41%, 16%) |
| OKLCH | oklch(24.8% 0.063 304.6) |
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 #281839 | 16.40:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #281839 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #281839 text on white | 16.40:1 | AAA | Lc 103.2 | Preferred for body text |
| #281839 text on black | 1.27:1 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE7F6
oklch(93.7% 0.021 304)
-
Step 200
200
#DFD3F0
oklch(88.5% 0.041 304.3)
-
Step 300
300
#CBB5E8
oklch(80.9% 0.074 304.4)
-
Step 400
400
#B18DDD
oklch(70.7% 0.12 304.2)
-
Step 500
500
#9F6ED3
oklch(63.1% 0.153 304.8)
-
Step 600
600
#8A54C0
oklch(55.6% 0.166 304.7)
-
Step 700
700
#7544A6
oklch(49.2% 0.154 304.4)
-
Step 800
800
#5F3886
oklch(42.6% 0.128 304.6)
-
Step 900
900
#4E316C
oklch(37.7% 0.101 304.7)
-
Step 950
950 (this color)
#281839
oklch(24.8% 0.063 304.6)
#281839 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) | #0E1F3A | 0.047 |
| Deuteranopia (no green cones) | #131F38 | 0.042 |
| Tritanopia (no blue cones) | #251E25 | 0.048 |
| Achromatopsia (no color) | #1F1F1F | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281839
#281839
oklch(24.8% 0.063 304.6)
- #1B2600
#1B2600
oklch(24.9% 0.062 124.4)
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 #281839, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.047
- Dark Purple #35063E ΔE 0.048
- Eggplant #380835 ΔE 0.048
- Dark #1B2431 ΔE 0.050
- Very Dark Purple #2A0134 ΔE 0.055
- Midnight Purple #280137 ΔE 0.055
- Aubergine #3D0734 ΔE 0.056
- Deep Purple #36013F ΔE 0.056
Use #281839 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.