#B73635
Closest named color: Dull Red (#BB3F3F). oklch(52.6% 0.166 25.3), rgb(183, 54, 53).
Aa
White text reads best on this color (5.84:1).
About this color
#B73635 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.166 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.020 away. White text reads best on it, at 5.84:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #B73635 |
| RGB | rgb(183, 54, 53) |
| HSL | hsl(0, 55%, 46%) |
| OKLCH | oklch(52.6% 0.166 25.3) |
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 #B73635 | 5.84:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #B73635 | 3.59:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #B73635 text on white | 5.84:1 | AA | Lc 78.1 | Fine for body text |
| #B73635 text on black | 3.59:1 | AA large text | Lc -23.7 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F4CFCB
oklch(88.5% 0.042 25.3)
-
Step 300
300
#EDAEA8
oklch(80.8% 0.075 25)
-
Step 400
400
#E1827A
oklch(70.7% 0.118 25.6)
-
Step 500
500
#D65E58
oklch(63.1% 0.153 25.3)
-
Step 600
600 (this color)
#B73635
oklch(52.6% 0.166 25.3)
-
Step 700
700
#A73130
oklch(49.2% 0.154 25.3)
-
Step 800
800
#872A28
oklch(42.7% 0.127 25.4)
-
Step 900
900
#6D2825
oklch(37.8% 0.099 25.5)
-
Step 950
950
#401816
oklch(27% 0.063 25.1)
#B73635 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) | #5B5334 | 0.178 |
| Deuteranopia (no green cones) | #7B6F31 | 0.163 |
| Tritanopia (no blue cones) | #C90837 | 0.049 |
| Achromatopsia (no color) | #656565 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B73635
#B73635
oklch(52.6% 0.166 25.3)
- #007983
#007983
oklch(52.6% 0.09 204.9)
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 #B73635, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.020
- Firebrick #B22222 ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.037
- Dusty Red #B9484E ΔE 0.038
- Sinopia #BB3E03 ΔE 0.042
- Rufous #AE2012 ΔE 0.044
- Lipstick Red #C0022F ΔE 0.044
- Scarlet #BE0119 ΔE 0.044
Use #B73635 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.