#5B1D05
Closest named color: Reddy Brown (#6E1005). oklch(32.5% 0.097 39.3), rgb(91, 29, 5).
Aa
White text reads best on this color (12.94:1).
About this color
#5B1D05 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.097 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.043 away. White text reads best on it, at 12.94:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.62:1 |
| White text | 12.94:1 |
Values
| HEX | #5B1D05 |
| RGB | rgb(91, 29, 5) |
| HSL | hsl(17, 90%, 19%) |
| OKLCH | oklch(32.5% 0.097 39.3) |
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 #5B1D05 | 12.94:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #5B1D05 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #5B1D05 text on white | 12.94:1 | AAA | Lc 98.4 | Preferred for body text |
| #5B1D05 text on black | 1.62:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F2D1C6
oklch(88.5% 0.04 39.3)
-
Step 300
300
#EBB19E
oklch(80.9% 0.073 38.9)
-
Step 400
400
#DE8669
oklch(70.7% 0.116 39)
-
Step 500
500
#D2653F
oklch(63.1% 0.148 39.4)
-
Step 600
600
#BE481A
oklch(55.6% 0.162 39.3)
-
Step 700
700
#A3380B
oklch(49% 0.15 39.1)
-
Step 800
800
#85300F
oklch(42.8% 0.124 39.3)
-
Step 900
900 (this color)
#5B1D05
oklch(32.5% 0.097 39.3)
-
Step 950
950
#3F1A0E
oklch(27% 0.062 38.5)
#5B1D05 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) | #2F2902 | 0.097 |
| Deuteranopia (no green cones) | #3E3703 | 0.089 |
| Tritanopia (no blue cones) | #650B19 | 0.044 |
| Achromatopsia (no color) | #313131 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1D05
#5B1D05
oklch(32.5% 0.097 39.3)
- #003B49
#003B49
oklch(32.6% 0.059 219.7)
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 #5B1D05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.043
- Claret #680018 ΔE 0.053
- Chocolate Brown #411900 ΔE 0.062
- Blood #770001 ΔE 0.063
- Chestnut #742802 ΔE 0.064
- Burgundy #610023 ΔE 0.064
- Mahogany #4A0100 ΔE 0.069
- Maroon #800000 ΔE 0.080
Use #5B1D05 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.