#281D4E
Closest named color: Dark Indigo (#1F0954). oklch(27.4% 0.086 289.8), rgb(40, 29, 78).
Aa
White text reads best on this color (15.26:1).
About this color
#281D4E is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.086 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.050 away. White text reads best on it, at 15.26:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.37:1 |
| White text | 15.26:1 |
Values
| HEX | #281D4E |
| RGB | rgb(40, 29, 78) |
| HSL | hsl(253, 46%, 21%) |
| OKLCH | oklch(27.4% 0.086 289.8) |
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 #281D4E | 15.26:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #281D4E | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #281D4E text on white | 15.26:1 | AAA | Lc 102.0 | Preferred for body text |
| #281D4E text on black | 1.37:1 | 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
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D8D4FD
oklch(88.6% 0.056 289.7)
-
Step 300
300
#BFB6FF
oklch(81% 0.102 289.6)
-
Step 400
400
#A08CFE
oklch(70.7% 0.163 289.6)
-
Step 500
500
#8C69FC
oklch(63% 0.209 290)
-
Step 600
600
#784BEC
oklch(55.7% 0.228 289.7)
-
Step 700
700
#653ACD
oklch(49.1% 0.212 289.6)
-
Step 800
800
#5232A6
oklch(42.7% 0.175 289.5)
-
Step 900
900
#432E83
oklch(37.7% 0.136 289.6)
-
Step 950
950 (this color)
#281D4E
oklch(27.4% 0.086 289.8)
#281D4E 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) | #022650 | 0.051 |
| Deuteranopia (no green cones) | #03244D | 0.050 |
| Tritanopia (no blue cones) | #1D2832 | 0.071 |
| Achromatopsia (no color) | #252525 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281D4E
#281D4E
oklch(27.4% 0.086 289.8)
- #292A00
#292A00
oklch(27.5% 0.06 111.2)
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 #281D4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.058
- Dark Purple #35063E ΔE 0.061
- Marine #042E60 ΔE 0.064
- Dark #1B2431 ΔE 0.067
- Midnight Blue #191970 ΔE 0.068
- Deep Purple #36013F ΔE 0.068
Use #281D4E 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.