#281933
Closest named color: Dark (#1B2431). oklch(24.6% 0.052 309.6), rgb(40, 25, 51).
Aa
White text reads best on this color (16.44:1).
About this color
#281933 is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.052 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.043 away. White text reads best on it, at 16.44:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.27:1 |
| White text | 16.44:1 |
Values
| HEX | #281933 |
| RGB | rgb(40, 25, 51) |
| HSL | hsl(275, 34%, 15%) |
| OKLCH | oklch(24.6% 0.052 309.6) |
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 #281933 | 16.44:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #281933 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #281933 text on white | 16.44:1 | AAA | Lc 103.3 | Preferred for body text |
| #281933 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#E0D3EB
oklch(88.5% 0.035 309.7)
-
Step 300
300
#CDB6DF
oklch(80.9% 0.062 310.2)
-
Step 400
400
#B38FCF
oklch(70.6% 0.099 309.7)
-
Step 500
500
#A073C2
oklch(63.1% 0.124 309.4)
-
Step 600
600
#8B5AAE
oklch(55.6% 0.135 309.6)
-
Step 700
700
#764996
oklch(49.1% 0.127 309.5)
-
Step 800
800
#603C7A
oklch(42.6% 0.106 309.4)
-
Step 900
900
#4F3462
oklch(37.7% 0.082 310)
-
Step 950
950 (this color)
#281933
oklch(24.6% 0.052 309.6)
#281933 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) | #131F34 | 0.040 |
| Deuteranopia (no green cones) | #171F32 | 0.036 |
| Tritanopia (no blue cones) | #271D23 | 0.037 |
| Achromatopsia (no color) | #1F1F1F | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281933
#281933
oklch(24.6% 0.052 309.6)
- #182508
#182508
oklch(24.4% 0.052 129.8)
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 #281933, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.045
- Eggplant #380835 ΔE 0.050
- Jet #212529 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.053
- Dark Purple #35063E ΔE 0.055
- Aubergine #3D0734 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.060
Use #281933 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.