#B73927
Closest named color: Sinopia (#BB3E03). oklch(52.7% 0.165 31.1), rgb(183, 57, 39).
Aa
White text reads best on this color (5.78:1).
About this color
#B73927 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.165 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.026 away. White text reads best on it, at 5.78:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.62:1 |
| White text | 5.78:1 |
Values
| HEX | #B73927 |
| RGB | rgb(183, 57, 39) |
| HSL | hsl(8, 65%, 44%) |
| OKLCH | oklch(52.7% 0.165 31.1) |
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 #B73927 | 5.78:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #B73927 | 3.62:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #B73927 text on white | 5.78:1 | AA | Lc 77.9 | Fine for body text |
| #B73927 text on black | 3.62:1 | AA large text | Lc -23.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F3D0C9
oklch(88.5% 0.041 31.2)
-
Step 300
300
#EDAFA3
oklch(80.9% 0.075 31.1)
-
Step 400
400
#E18372
oklch(70.7% 0.119 31.2)
-
Step 500
500
#D5604D
oklch(63% 0.152 31.1)
-
Step 600
600 (this color)
#B73927
oklch(52.7% 0.165 31.1)
-
Step 700
700
#A63323
oklch(49.1% 0.154 31)
-
Step 800
800
#872C1E
oklch(42.8% 0.127 31.4)
-
Step 900
900
#6D291E
oklch(37.8% 0.1 31.4)
-
Step 950
950
#401912
oklch(27% 0.063 31.8)
#B73927 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) | #5E5424 | 0.173 |
| Deuteranopia (no green cones) | #7D7022 | 0.159 |
| Tritanopia (no blue cones) | #CA0D36 | 0.058 |
| Achromatopsia (no color) | #656565 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B73927
#B73927
oklch(52.7% 0.165 31.1)
- #007989
#007989
oklch(52.8% 0.092 210.8)
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 #B73927, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.026
- Dull Red #BB3F3F ΔE 0.027
- Rusty Red #AF2F0D ΔE 0.029
- Firebrick #B22222 ΔE 0.036
- Rufous #AE2012 ΔE 0.043
- Rust Red #AA2704 ΔE 0.045
- Dusty Red #B9484E ΔE 0.045
- Brick Orange #C14A09 ΔE 0.047
Use #B73927 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.