#5B1901
Closest named color: Reddy Brown (#6E1005). oklch(31.9% 0.102 38.5), rgb(91, 25, 1).
Aa
White text reads best on this color (13.25:1).
About this color
#5B1901 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.102 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 13.25:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.102) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.58:1 |
| White text | 13.25:1 |
Values
| HEX | #5B1901 |
| RGB | rgb(91, 25, 1) |
| HSL | hsl(16, 98%, 18%) |
| OKLCH | oklch(31.9% 0.102 38.5) |
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 #5B1901 | 13.25:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #5B1901 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #5B1901 text on white | 13.25:1 | AAA | Lc 98.8 | Preferred for body text |
| #5B1901 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FFE3DA
oklch(93.6% 0.033 38.6)
-
Step 200
200
#FFCCBB
oklch(88.5% 0.063 39.2)
-
Step 300
300
#FFA78B
oklch(80.9% 0.112 38.4)
-
Step 400
400
#FF6D3B
oklch(70.8% 0.189 38.6)
-
Step 500
500
#E94C00
oklch(63% 0.204 38.6)
-
Step 600
600
#C53F00
oklch(55.6% 0.18 38.6)
-
Step 700
700
#A73400
oklch(49.2% 0.159 38.6)
-
Step 800
800
#8A2900
oklch(42.7% 0.139 38.4)
-
Step 900
900
#742100
oklch(37.7% 0.122 38.4)
-
Step 950
950 (this color)
#5B1901
oklch(31.9% 0.102 38.5)
#5B1901 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) | #2D2600 | 0.102 |
| Deuteranopia (no green cones) | #3D3500 | 0.092 |
| Tritanopia (no blue cones) | #650315 | 0.043 |
| Achromatopsia (no color) | #303030 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1901
#5B1901
oklch(31.9% 0.102 38.5)
- #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 #5B1901, 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 0.050
- Chocolate Brown #411900 ΔE 0.060
- Burgundy #610023 ΔE 0.062
- Blood #770001 ΔE 0.062
- Mahogany #4A0100 ΔE 0.063
- Chestnut #742802 ΔE 0.069
- Maroon #800000 ΔE 0.081
Use #5B1901 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.