#281A40
Closest named color: Oxford Blue (#1B263B). oklch(25.7% 0.07 298.3), rgb(40, 26, 64).
Aa
White text reads best on this color (16.00:1).
About this color
#281A40 is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.070 and its hue 298°. 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 16.00:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 16.00:1 |
Values
| HEX | #281A40 |
| RGB | rgb(40, 26, 64) |
| HSL | hsl(262, 42%, 18%) |
| OKLCH | oklch(25.7% 0.07 298.3) |
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 #281A40 | 16.00:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #281A40 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #281A40 text on white | 16.00:1 | AAA | Lc 102.8 | Preferred for body text |
| #281A40 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F4
oklch(88.4% 0.046 297.9)
-
Step 300
300
#C7B5F0
oklch(80.8% 0.084 298.5)
-
Step 400
400
#AB8DE8
oklch(70.7% 0.133 298.1)
-
Step 500
500
#986EE1
oklch(63.2% 0.169 298.3)
-
Step 600
600
#8352CE
oklch(55.5% 0.184 298.4)
-
Step 700
700
#6F42B3
oklch(49.1% 0.172 298.1)
-
Step 800
800
#5A3791
oklch(42.6% 0.143 298)
-
Step 900
900
#4A3173
oklch(37.7% 0.11 298.5)
-
Step 950
950 (this color)
#281A40
oklch(25.7% 0.07 298.3)
#281A40 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) | #0C2241 | 0.048 |
| Deuteranopia (no green cones) | #10213F | 0.043 |
| Tritanopia (no blue cones) | #23212A | 0.053 |
| Achromatopsia (no color) | #222222 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A40
#281A40
oklch(25.7% 0.07 298.3)
- #212700
#212700
oklch(25.8% 0.06 118.1)
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 #281A40, 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 0.049
- Dark #1B2431 ΔE 0.052
- Eggplant #380835 ΔE 0.053
- Deep Purple #36013F ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.060
- Aubergine #3D0734 ΔE 0.061
Use #281A40 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.