#5B181C
Closest named color: Claret (#680018). oklch(32.1% 0.098 21.3), rgb(91, 24, 28).
Aa
White text reads best on this color (13.18:1).
About this color
#5B181C is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.098 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.035 away. White text reads best on it, at 13.18:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.098) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.59:1 |
| White text | 13.18:1 |
Values
| HEX | #5B181C |
| RGB | rgb(91, 24, 28) |
| HSL | hsl(356, 58%, 23%) |
| OKLCH | oklch(32.1% 0.098 21.3) |
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 #5B181C | 13.18:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #5B181C | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #5B181C text on white | 13.18:1 | AAA | Lc 98.8 | Preferred for body text |
| #5B181C text on black | 1.59:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E0
oklch(93.6% 0.032 22.5)
-
Step 200
200
#FFCAC8
oklch(88.5% 0.061 20.9)
-
Step 300
300
#FFA4A2
oklch(80.9% 0.108 21.1)
-
Step 400
400
#FF676C
oklch(70.7% 0.186 21.2)
-
Step 500
500
#F82745
oklch(63.2% 0.236 21.2)
-
Step 600
600
#D70033
oklch(55.6% 0.224 21.2)
-
Step 700
700
#B6002A
oklch(49.1% 0.197 21.1)
-
Step 800
800
#970021
oklch(42.7% 0.172 21.2)
-
Step 900
900
#7F001A
oklch(37.7% 0.152 21.2)
-
Step 950
950 (this color)
#5B181C
oklch(32.1% 0.098 21.3)
#5B181C 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) | #2A271C | 0.106 |
| Deuteranopia (no green cones) | #3B351A | 0.097 |
| Tritanopia (no blue cones) | #64071A | 0.026 |
| Achromatopsia (no color) | #303030 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B181C
#5B181C
oklch(32.1% 0.098 21.3)
- #003B3F
#003B3F
oklch(32.1% 0.055 202.3)
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 #5B181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.035
- Burgundy #610023 ΔE 0.037
- Reddy Brown #6E1005 ΔE 0.045
- Blood #770001 ΔE 0.063
- Mahogany #4A0100 ΔE 0.065
- Chocolate Brown #411900 ΔE 0.071
- Wine Red #7B0323 ΔE 0.071
- Merlot #730039 ΔE 0.075
Use #5B181C 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.