#281A4E
Closest named color: Dark Indigo (#1F0954). oklch(26.8% 0.091 291.4), rgb(40, 26, 78).
Aa
White text reads best on this color (15.57:1).
About this color
#281A4E is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.091 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.043 away. White text reads best on it, at 15.57:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.34:1 |
| White text | 15.57:1 |
Values
| HEX | #281A4E |
| RGB | rgb(40, 26, 78) |
| HSL | hsl(256, 50%, 20%) |
| OKLCH | oklch(26.8% 0.091 291.4) |
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 #281A4E | 15.57:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #281A4E | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #281A4E text on white | 15.57:1 | AAA | Lc 102.3 | Preferred for body text |
| #281A4E text on black | 1.34:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E7FE
oklch(93.6% 0.031 289.8)
-
Step 200
200
#D9D3FF
oklch(88.6% 0.06 291.4)
-
Step 300
300
#C1B5FF
oklch(81% 0.104 291.3)
-
Step 400
400
#A38AFF
oklch(70.7% 0.167 291.4)
-
Step 500
500
#9066FF
oklch(63.1% 0.217 291.6)
-
Step 600
600
#7C44F1
oklch(55.6% 0.241 291.3)
-
Step 700
700
#6933D2
oklch(49.1% 0.224 291.3)
-
Step 800
800
#552DA9
oklch(42.6% 0.185 291.3)
-
Step 900
900
#462B86
oklch(37.7% 0.144 291.6)
-
Step 950
950 (this color)
#281A4E
oklch(26.8% 0.091 291.4)
#281A4E 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) | #002550 | 0.056 |
| Deuteranopia (no green cones) | #00234D | 0.056 |
| Tritanopia (no blue cones) | #1D2631 | 0.074 |
| Achromatopsia (no color) | #242424 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A4E
#281A4E
oklch(26.8% 0.091 291.4)
- #272800
#272800
oklch(26.7% 0.059 111.2)
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 #281A4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.043
- Dark Purple #35063E ΔE 0.056
- Oxford Blue #1B263B ΔE 0.058
- Deep Purple #36013F ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.066
- Eggplant #380835 ΔE 0.067
- Midnight Blue #191970 ΔE 0.067
- Marine #042E60 ΔE 0.070
Use #281A4E 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.