#281D33
Closest named color: Dark (#1B2431). oklch(25.5% 0.043 306.5), rgb(40, 29, 51).
Aa
White text reads best on this color (15.98:1).
About this color
#281D33 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.043 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.033 away. White text reads best on it, at 15.98:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 15.98:1 |
Values
| HEX | #281D33 |
| RGB | rgb(40, 29, 51) |
| HSL | hsl(270, 28%, 16%) |
| OKLCH | oklch(25.5% 0.043 306.5) |
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 #281D33 | 15.98:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #281D33 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #281D33 text on white | 15.98:1 | AAA | Lc 102.9 | Preferred for body text |
| #281D33 text on black | 1.31:1 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE7F2
oklch(93.5% 0.016 306.4)
-
Step 200
200
#DED5E8
oklch(88.6% 0.027 307)
-
Step 300
300
#C9B9DB
oklch(81% 0.05 306.5)
-
Step 400
400
#AD94C9
oklch(70.7% 0.081 305.9)
-
Step 500
500
#9A78BB
oklch(63.1% 0.105 306.9)
-
Step 600
600
#8460A7
oklch(55.5% 0.113 306.4)
-
Step 700
700
#704F8F
oklch(49% 0.105 306.7)
-
Step 800
800
#5B4174
oklch(42.6% 0.087 306.5)
-
Step 900
900
#4B375E
oklch(37.6% 0.069 306.9)
-
Step 950
950 (this color)
#281D33
oklch(25.5% 0.043 306.5)
#281D33 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) | #182134 | 0.030 |
| Deuteranopia (no green cones) | #1B2232 | 0.028 |
| Tritanopia (no blue cones) | #262025 | 0.032 |
| Achromatopsia (no color) | #222222 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281D33
#281D33
oklch(25.5% 0.043 306.5)
- #1D260F
#1D260F
oklch(25.3% 0.042 126.7)
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 #281D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.033
- Oxford Blue #1B263B ΔE 0.035
- Jet #212529 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.054
- Eggplant #380835 ΔE 0.059
- Dark Purple #35063E ΔE 0.065
- Aubergine #3D0734 ΔE 0.065
Use #281D33 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.