#5B1904
Closest named color: Reddy Brown (#6E1005). oklch(31.9% 0.101 37), rgb(91, 25, 4).
Aa
White text reads best on this color (13.24:1).
About this color
#5B1904 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.101 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.042 away. White text reads best on it, at 13.24:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.101) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.58:1 |
| White text | 13.24:1 |
Values
| HEX | #5B1904 |
| RGB | rgb(91, 25, 4) |
| HSL | hsl(14, 92%, 19%) |
| OKLCH | oklch(31.9% 0.101 37) |
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 #5B1904 | 13.24:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #5B1904 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #5B1904 text on white | 13.24:1 | AAA | Lc 98.8 | Preferred for body text |
| #5B1904 text on black | 1.58:1 | 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 950.
-
Step 50
50
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FFE3DA
oklch(93.6% 0.033 38.6)
-
Step 200
200
#FFCCBC
oklch(88.6% 0.062 38.1)
-
Step 300
300
#FFA78D
oklch(80.9% 0.111 37.2)
-
Step 400
400
#FF6C40
oklch(70.7% 0.189 37.1)
-
Step 500
500
#ED4700
oklch(63.2% 0.211 37)
-
Step 600
600
#C83A00
oklch(55.6% 0.186 36.9)
-
Step 700
700
#A93000
oklch(49.1% 0.164 37)
-
Step 800
800
#8C2600
oklch(42.7% 0.143 37)
-
Step 900
900
#761F00
oklch(37.8% 0.126 37.1)
-
Step 950
950 (this color)
#5B1904
oklch(31.9% 0.101 37)
#5B1904 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) | #2D2601 | 0.102 |
| Deuteranopia (no green cones) | #3D3501 | 0.093 |
| Tritanopia (no blue cones) | #650315 | 0.041 |
| Achromatopsia (no color) | #303030 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1904
#5B1904
oklch(31.9% 0.101 37)
- #003946
#003946
oklch(31.8% 0.057 218.7)
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 #5B1904, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.042
- Claret #680018 ΔE 0.048
- Burgundy #610023 ΔE 0.059
- Chocolate Brown #411900 ΔE 0.060
- Blood #770001 ΔE 0.062
- Mahogany #4A0100 ΔE 0.063
- Chestnut #742802 ΔE 0.069
- Maroon #800000 ΔE 0.080
Use #5B1904 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.