#281A33
Closest named color: Dark (#1B2431). oklch(24.8% 0.05 309), rgb(40, 26, 51).
Aa
White text reads best on this color (16.33:1).
About this color
#281A33 is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.050 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.040 away. White text reads best on it, at 16.33:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.28:1 |
| White text | 16.33:1 |
Values
| HEX | #281A33 |
| RGB | rgb(40, 26, 51) |
| HSL | hsl(274, 32%, 15%) |
| OKLCH | oklch(24.8% 0.05 309) |
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 #281A33 | 16.33:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #281A33 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #281A33 text on white | 16.33:1 | AAA | Lc 103.2 | Preferred for body text |
| #281A33 text on black | 1.28:1 | 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
#DFD4EA
oklch(88.5% 0.032 308.1)
-
Step 300
300
#CCB7DE
oklch(81% 0.059 309.3)
-
Step 400
400
#B291CD
oklch(70.8% 0.093 309.2)
-
Step 500
500
#9F74C0
oklch(63.1% 0.12 309.3)
-
Step 600
600
#8A5BAD
oklch(55.6% 0.132 309.2)
-
Step 700
700
#754B94
oklch(49.2% 0.121 309.2)
-
Step 800
800
#5F3E78
oklch(42.7% 0.099 309)
-
Step 900
900
#4E3561
oklch(37.7% 0.078 309.2)
-
Step 950
950 (this color)
#281A33
oklch(24.8% 0.05 309)
#281A33 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) | #151F34 | 0.036 |
| Deuteranopia (no green cones) | #182032 | 0.034 |
| Tritanopia (no blue cones) | #271E24 | 0.035 |
| Achromatopsia (no color) | #202020 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A33
#281A33
oklch(24.8% 0.05 309)
- #1A260A
#1A260A
oklch(25% 0.05 128.9)
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 #281A33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.042
- Jet #212529 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.052
- Eggplant #380835 ΔE 0.053
- Dark Purple #35063E ΔE 0.057
- Aubergine #3D0734 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.062
Use #281A33 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.