#281A4B
Closest named color: Dark Indigo (#1F0954). oklch(26.6% 0.087 292.7), rgb(40, 26, 75).
Aa
White text reads best on this color (15.67:1).
About this color
#281A4B is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.087 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.046 away. White text reads best on it, at 15.67:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.33:1 |
| White text | 15.67:1 |
Values
| HEX | #281A4B |
| RGB | rgb(40, 26, 75) |
| HSL | hsl(257, 49%, 20%) |
| OKLCH | oklch(26.6% 0.087 292.7) |
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 #281A4B | 15.67:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #281A4B | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #281A4B text on white | 15.67:1 | AAA | Lc 102.4 | Preferred for body text |
| #281A4B text on black | 1.33:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#DAD3FC
oklch(88.5% 0.056 293)
-
Step 300
300
#C2B4FE
oklch(80.8% 0.104 292.6)
-
Step 400
400
#A58AFD
oklch(70.7% 0.164 292.5)
-
Step 500
500
#9267FB
oklch(63.2% 0.211 292.7)
-
Step 600
600
#7E48EA
oklch(55.7% 0.229 292.7)
-
Step 700
700
#6B37CB
oklch(49.1% 0.213 292.9)
-
Step 800
800
#562FA4
oklch(42.6% 0.176 292.6)
-
Step 900
900
#472C82
oklch(37.7% 0.137 293.1)
-
Step 950
950 (this color)
#281A4B
oklch(26.6% 0.087 292.7)
#281A4B 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) | #00244D | 0.056 |
| Deuteranopia (no green cones) | #02224A | 0.054 |
| Tritanopia (no blue cones) | #1E252F | 0.071 |
| Achromatopsia (no color) | #232323 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A4B
#281A4B
oklch(26.6% 0.087 292.7)
- #262800
#262800
oklch(26.6% 0.059 112.6)
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 #281A4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.046
- Dark Purple #35063E ΔE 0.053
- Oxford Blue #1B263B ΔE 0.055
- Deep Purple #36013F ΔE 0.060
- Eggplant #380835 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.064
- Dark #1B2431 ΔE 0.067
- Midnight Purple #280137 ΔE 0.068
Use #281A4B 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.