#281B43
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.073 296), rgb(40, 27, 67).
Aa
White text reads best on this color (15.81:1).
About this color
#281B43 is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.073 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 15.81:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.81:1 |
Values
| HEX | #281B43 |
| RGB | rgb(40, 27, 67) |
| HSL | hsl(260, 43%, 18%) |
| OKLCH | oklch(26.1% 0.073 296) |
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 #281B43 | 15.81:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #281B43 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #281B43 text on white | 15.81:1 | AAA | Lc 102.6 | Preferred for body text |
| #281B43 text on black | 1.32:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DBD3F6
oklch(88.4% 0.048 295.9)
-
Step 300
300
#C5B6F3
oklch(81% 0.086 295.7)
-
Step 400
400
#A98DEC
oklch(70.7% 0.138 296.3)
-
Step 500
500
#956DE6
oklch(63% 0.177 296.2)
-
Step 600
600
#8052D4
oklch(55.6% 0.191 295.9)
-
Step 700
700
#6D41B8
oklch(49.1% 0.179 296.2)
-
Step 800
800
#583795
oklch(42.7% 0.147 295.7)
-
Step 900
900
#483177
oklch(37.8% 0.115 295.5)
-
Step 950
950 (this color)
#281B43
oklch(26.1% 0.073 296)
#281B43 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) | #0B2344 | 0.047 |
| Deuteranopia (no green cones) | #0E2242 | 0.044 |
| Tritanopia (no blue cones) | #22232C | 0.057 |
| Achromatopsia (no color) | #232323 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281B43
#281B43
oklch(26.1% 0.073 296)
- #232700
#232700
oklch(26% 0.059 115.5)
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 #281B43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.045
- Dark Purple #35063E ΔE 0.052
- Dark #1B2431 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.056
- Eggplant #380835 ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.058
- Deep Purple #36013F ΔE 0.060
- Aubergine #3D0734 ΔE 0.064
Use #281B43 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.