#75181B
Closest named color: Blood (#770001). oklch(37.1% 0.127 24.5), rgb(117, 24, 27).
Aa
White text reads best on this color (11.03:1).
About this color
#75181B is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.127 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Blood (#770001), ΔE 0.026 away. White text reads best on it, at 11.03:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Blood (#770001) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #75181B |
| RGB | rgb(117, 24, 27) |
| HSL | hsl(358, 66%, 28%) |
| OKLCH | oklch(37.1% 0.127 24.5) |
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 #75181B | 11.03:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #75181B | 1.90:1 | Fails | Lc 9.6 | Not readable |
| #75181B text on white | 11.03:1 | AAA | Lc 94.3 | Preferred for body text |
| #75181B text on black | 1.90:1 | Fails | Lc -8.3 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F8A9A2
oklch(80.9% 0.094 25)
-
Step 400
400
#F17670
oklch(70.8% 0.153 24.6)
-
Step 500
500
#E84A4A
oklch(63.2% 0.195 24.6)
-
Step 600
600
#D31C2C
oklch(55.6% 0.212 24.5)
-
Step 700
700
#B6041F
oklch(49% 0.197 24.5)
-
Step 800
800
#94101C
oklch(42.7% 0.163 24.4)
-
Step 900
900 (this color)
#75181B
oklch(37.1% 0.127 24.5)
-
Step 950
950
#461211
oklch(27% 0.08 25.2)
#75181B 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) | #342F1A | 0.138 |
| Deuteranopia (no green cones) | #4B4318 | 0.126 |
| Tritanopia (no blue cones) | #81001A | 0.029 |
| Achromatopsia (no color) | #3C3C3C | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #75181B
#75181B
oklch(37.1% 0.127 24.5)
- #004A50
#004A50
oklch(37.3% 0.064 204.1)
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 #75181B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blood #770001 ΔE 0.026
- Wine Red #7B0323 ΔE 0.027
- Reddy Brown #6E1005 ΔE 0.027
- Maroon #800000 ΔE 0.030
- Bordeaux #7B002C ΔE 0.039
- Chestnut #742802 ΔE 0.041
- Claret #680018 ΔE 0.046
- Dark Red #8B0000 ΔE 0.048
Use #75181B 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.