#251A4E
Closest named color: Dark Indigo (#1F0954). oklch(26.5% 0.091 288.3), rgb(37, 26, 78).
Aa
White text reads best on this color (15.71:1).
About this color
#251A4E is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.091 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.040 away. White text reads best on it, at 15.71:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.33:1 |
| White text | 15.71:1 |
Values
| HEX | #251A4E |
| RGB | rgb(37, 26, 78) |
| HSL | hsl(253, 50%, 20%) |
| OKLCH | oklch(26.5% 0.091 288.3) |
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 #251A4E | 15.71:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #251A4E | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #251A4E text on white | 15.71:1 | AAA | Lc 102.4 | Preferred for body text |
| #251A4E 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FE
oklch(93.6% 0.031 287.8)
-
Step 200
200
#D7D4FF
oklch(88.6% 0.059 288.3)
-
Step 300
300
#BDB6FF
oklch(80.8% 0.102 288.3)
-
Step 400
400
#9E8DFF
oklch(70.8% 0.163 288.4)
-
Step 500
500
#896AFF
oklch(63.1% 0.212 288.4)
-
Step 600
600
#7647F4
oklch(55.6% 0.241 288.4)
-
Step 700
700
#6336D4
oklch(49% 0.224 288.2)
-
Step 800
800
#512FAC
oklch(42.8% 0.186 288.4)
-
Step 900
900
#422C88
oklch(37.7% 0.145 288.4)
-
Step 950
950 (this color)
#251A4E
oklch(26.5% 0.091 288.3)
#251A4E 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) | #002450 | 0.051 |
| Deuteranopia (no green cones) | #00224D | 0.050 |
| Tritanopia (no blue cones) | #172631 | 0.075 |
| Achromatopsia (no color) | #232323 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #251A4E
#251A4E
oklch(26.5% 0.091 288.3)
- #282700
#282700
oklch(26.5% 0.057 108.3)
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 #251A4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.056
- Dark Purple #35063E ΔE 0.059
- Midnight Blue #191970 ΔE 0.065
- Deep Purple #36013F ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.067
- Marine #042E60 ΔE 0.068
- Dark #1B2431 ΔE 0.069
Use #251A4E 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.