#51383D
Closest named color: Charcoal Grey (#3C4142). oklch(37.1% 0.036 5.8), rgb(81, 56, 61).
Aa
White text reads best on this color (10.59:1).
About this color
#51383D is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.036 and its hue 6°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.043 away. White text reads best on it, at 10.59:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #51383D |
| RGB | rgb(81, 56, 61) |
| HSL | hsl(348, 18%, 27%) |
| OKLCH | oklch(37.1% 0.036 5.8) |
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 #51383D | 10.59:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #51383D | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #51383D text on white | 10.59:1 | AAA | Lc 94.5 | Preferred for body text |
| #51383D text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#EFE8E9
oklch(93.7% 0.008 7.3)
-
Step 200
200
#E3D5D7
oklch(88.5% 0.016 7.5)
-
Step 300
300
#D1BABE
oklch(81% 0.027 5.8)
-
Step 400
400
#B9969C
oklch(70.7% 0.043 6.7)
-
Step 500
500
#A87C84
oklch(63.2% 0.056 6.7)
-
Step 600
600
#92646E
oklch(55.5% 0.061 5)
-
Step 700
700
#7D535C
oklch(49.1% 0.057 5.3)
-
Step 800
800
#65444B
oklch(42.6% 0.047 5.3)
-
Step 900
900 (this color)
#51383D
oklch(37.1% 0.036 5.8)
-
Step 950
950
#302225
oklch(27% 0.022 4.4)
#51383D 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) | #3C3C3D | 0.039 |
| Deuteranopia (no green cones) | #41403D | 0.036 |
| Tritanopia (no blue cones) | #55363A | 0.009 |
| Achromatopsia (no color) | #3F3F3F | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51383D
#51383D
oklch(37.1% 0.036 5.8)
- #294643
#294643
oklch(37% 0.035 187.4)
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 #51383D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.043
- Purple Brown #673A3F ΔE 0.044
- Onyx #343A40 ΔE 0.051
- Charcoal #264653 ΔE 0.075
- Gunmetal #293241 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.078
- Dark Slate Gray #2F4F4F ΔE 0.080
- Dark Blue Grey #1F3B4D ΔE 0.081
Use #51383D 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.