#281F3F
Closest named color: Oxford Blue (#1B263B). oklch(26.7% 0.059 295.1), rgb(40, 31, 63).
Aa
White text reads best on this color (15.46:1).
About this color
#281F3F is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.059 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.032 away. White text reads best on it, at 15.46:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.46:1 |
Values
| HEX | #281F3F |
| RGB | rgb(40, 31, 63) |
| HSL | hsl(257, 34%, 18%) |
| OKLCH | oklch(26.7% 0.059 295.1) |
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 #281F3F | 15.46:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #281F3F | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #281F3F text on white | 15.46:1 | AAA | Lc 102.3 | Preferred for body text |
| #281F3F text on black | 1.35:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE7F6
oklch(93.5% 0.02 295.2)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C3B8EA
oklch(80.8% 0.071 294.9)
-
Step 400
400
#A692DF
oklch(70.7% 0.112 295.3)
-
Step 500
500
#9175D6
oklch(63.1% 0.144 295.3)
-
Step 600
600
#7C5CC3
oklch(55.6% 0.155 295.2)
-
Step 700
700
#684BA8
oklch(49% 0.144 294.9)
-
Step 800
800
#553E88
oklch(42.7% 0.119 295.2)
-
Step 900
900
#46366D
oklch(37.8% 0.092 295)
-
Step 950
950 (this color)
#281F3F
oklch(26.7% 0.059 295.1)
#281F3F 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) | #152540 | 0.034 |
| Deuteranopia (no green cones) | #16243E | 0.033 |
| Tritanopia (no blue cones) | #23252C | 0.047 |
| Achromatopsia (no color) | #242424 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281F3F
#281F3F
oklch(26.7% 0.059 295.1)
- #252901
#252901
oklch(26.8% 0.06 115.3)
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 #281F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Dark #1B2431 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.045
- Jet #212529 ΔE 0.053
- Dark Purple #35063E ΔE 0.062
- Gunmetal #293241 ΔE 0.062
- Eggplant #380835 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.064
Use #281F3F 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.