#51313E
Closest named color: Purple Brown (#673A3F). oklch(35.7% 0.05 354), rgb(81, 49, 62).
Aa
White text reads best on this color (11.29:1).
About this color
#51313E is a dark, muted red. In OKLCH its lightness is 36%, its chroma 0.050 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.054 away. White text reads best on it, at 11.29:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | muted (0.050) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #51313E |
| RGB | rgb(81, 49, 62) |
| HSL | hsl(336, 25%, 25%) |
| OKLCH | oklch(35.7% 0.05 354) |
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 #51313E | 11.29:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #51313E | 1.85:1 | Fails | Lc 7.9 | Not readable |
| #51313E text on white | 11.29:1 | AAA | Lc 96.0 | Preferred for body text |
| #51313E text on black | 1.85:1 | 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 900.
-
Step 50
50
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#F0E7EA
oklch(93.6% 0.011 354.9)
-
Step 200
200
#E5D4DA
oklch(88.5% 0.02 354.1)
-
Step 300
300
#D5B7C2
oklch(80.8% 0.037 353.9)
-
Step 400
400
#C091A3
oklch(70.7% 0.061 354)
-
Step 500
500
#AF768D
oklch(63.1% 0.077 353.7)
-
Step 600
600
#9A5E77
oklch(55.6% 0.085 353.7)
-
Step 700
700
#834D64
oklch(49% 0.079 353.3)
-
Step 800
800
#6B4051
oklch(42.8% 0.064 354.9)
-
Step 900
900 (this color)
#51313E
oklch(35.7% 0.05 354)
-
Step 950
950
#332027
oklch(27% 0.031 355.6)
#51313E 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) | #35373E | 0.053 |
| Deuteranopia (no green cones) | #3C3D3D | 0.052 |
| Tritanopia (no blue cones) | #563036 | 0.016 |
| Achromatopsia (no color) | #3A3A3A | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51313E
#51313E
oklch(35.7% 0.05 354)
- #1C453A
#1C453A
oklch(35.7% 0.05 173.3)
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 #51313E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.054
- Onyx #343A40 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.058
- Gunmetal #293241 ΔE 0.073
- Space Cadet #2B2D42 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.082
- Dark Blue Grey #1F3B4D ΔE 0.084
- Charcoal #264653 ΔE 0.086
Use #51313E 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.