#51313F
Closest named color: Purple Brown (#673A3F). oklch(35.7% 0.051 352.2), rgb(81, 49, 63).
Aa
White text reads best on this color (11.28:1).
About this color
#51313F is a dark, muted red. In OKLCH its lightness is 36%, its chroma 0.051 and its hue 352°. 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 11.28:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #51313F |
| RGB | rgb(81, 49, 63) |
| HSL | hsl(334, 25%, 25%) |
| OKLCH | oklch(35.7% 0.051 352.2) |
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 #51313F | 11.28:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #51313F | 1.86:1 | Fails | Lc 8.0 | Not readable |
| #51313F text on white | 11.28:1 | AAA | Lc 95.9 | Preferred for body text |
| #51313F text on black | 1.86:1 | 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
#D5B7C3
oklch(80.9% 0.038 351.9)
-
Step 400
400
#BF91A4
oklch(70.6% 0.061 352.2)
-
Step 500
500
#AF768E
oklch(63.2% 0.078 352.7)
-
Step 600
600
#9A5E78
oklch(55.7% 0.085 352.7)
-
Step 700
700
#834D65
oklch(49% 0.079 352.3)
-
Step 800
800
#6A4053
oklch(42.7% 0.064 351.5)
-
Step 900
900 (this color)
#51313F
oklch(35.7% 0.051 352.2)
-
Step 950
950
#332028
oklch(27.1% 0.032 352.5)
#51313F 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) | #343740 | 0.055 |
| Deuteranopia (no green cones) | #3C3D3E | 0.051 |
| Tritanopia (no blue cones) | #563036 | 0.017 |
| Achromatopsia (no color) | #3B3B3B | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51313F
#51313F
oklch(35.7% 0.051 352.2)
- #1C4539
#1C4539
oklch(35.7% 0.051 171.6)
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 #51313F, 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 0.057
- Charcoal Grey #3C4142 ΔE 0.058
- Gunmetal #293241 ΔE 0.073
- Space Cadet #2B2D42 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.081
- Dark Blue Grey #1F3B4D ΔE 0.084
- Charcoal #264653 ΔE 0.086
Use #51313F 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.