#51277D
Closest named color: Indigo (#4B0082). oklch(37.7% 0.14 302.6), rgb(81, 39, 125).
Aa
White text reads best on this color (10.84:1).
About this color
#51277D is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.140 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.055 away. White text reads best on it, at 10.84:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.93:1 |
| White text | 10.84:1 |
Values
| HEX | #51277D |
| RGB | rgb(81, 39, 125) |
| HSL | hsl(269, 52%, 32%) |
| OKLCH | oklch(37.7% 0.14 302.6) |
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 #51277D | 10.84:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #51277D | 1.93:1 | Fails | Lc 9.3 | Not readable |
| #51277D text on white | 10.84:1 | AAA | Lc 94.6 | Preferred for body text |
| #51277D text on black | 1.93:1 | Fails | Lc -8.0 | 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 900.
-
Step 50
50
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EDE5FB
oklch(93.5% 0.031 302.3)
-
Step 200
200
#E0D1FA
oklch(88.6% 0.058 301.9)
-
Step 300
300
#CEB0F9
oklch(80.9% 0.106 302.9)
-
Step 400
400
#B683F6
oklch(70.7% 0.169 302.8)
-
Step 500
500
#A45EF2
oklch(63.1% 0.215 302.4)
-
Step 600
600
#903DE0
oklch(55.6% 0.232 302.5)
-
Step 700
700
#7B2DC3
oklch(49.2% 0.216 302.5)
-
Step 800
800
#64289D
oklch(42.7% 0.178 302.8)
-
Step 900
900 (this color)
#51277D
oklch(37.7% 0.14 302.6)
-
Step 950
950
#2F1849
oklch(26.9% 0.088 302.5)
#51277D 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) | #003C80 | 0.106 |
| Deuteranopia (no green cones) | #033D7B | 0.106 |
| Tritanopia (no blue cones) | #483A4E | 0.103 |
| Achromatopsia (no color) | #3D3D3D | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51277D
#51277D
oklch(37.7% 0.14 302.6)
- #394900
#394900
oklch(37.8% 0.092 122.7)
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 #51277D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.055
- Royal Purple #4B006E ΔE 0.064
- Rebecca Purple #663399 ΔE 0.067
- Blueberry #464196 ΔE 0.072
- Imperial Purple #480CA8 ΔE 0.082
- Chrysanthemum #560BAD ΔE 0.084
- Grape Purple #5D1451 ΔE 0.084
Use #51277D 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.