#B23E26
Closest named color: Sinopia (#BB3E03). oklch(52.5% 0.156 33.5), rgb(178, 62, 38).
Aa
White text reads best on this color (5.81:1).
About this color
#B23E26 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.156 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.025 away. White text reads best on it, at 5.81:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #B23E26 |
| RGB | rgb(178, 62, 38) |
| HSL | hsl(10, 65%, 42%) |
| OKLCH | oklch(52.5% 0.156 33.5) |
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 #B23E26 | 5.81:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #B23E26 | 3.61:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #B23E26 text on white | 5.81:1 | AA | Lc 78.2 | Fine for body text |
| #B23E26 text on black | 3.61:1 | AA large text | Lc -23.6 | 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
#F7E5E1
oklch(93.5% 0.021 32.5)
-
Step 200
200
#F2D1C9
oklch(88.6% 0.039 33.9)
-
Step 300
300
#EAB1A3
oklch(80.9% 0.07 34.2)
-
Step 400
400
#DD8672
oklch(70.7% 0.112 33.8)
-
Step 500
500
#D1644D
oklch(63% 0.143 33.3)
-
Step 600
600 (this color)
#B23E26
oklch(52.5% 0.156 33.5)
-
Step 700
700
#A23822
oklch(49% 0.145 33.5)
-
Step 800
800
#84301E
oklch(42.8% 0.12 33.7)
-
Step 900
900
#6A2B1E
oklch(37.6% 0.094 33.3)
-
Step 950
950
#3F1A12
oklch(27.1% 0.06 33.5)
#B23E26 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) | #5F5522 | 0.161 |
| Deuteranopia (no green cones) | #7C6F21 | 0.147 |
| Tritanopia (no blue cones) | #C41E39 | 0.059 |
| Achromatopsia (no color) | #656565 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B23E26
#B23E26
oklch(52.5% 0.156 33.5)
- #00778A
#00778A
oklch(52.3% 0.092 213.9)
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 #B23E26, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.025
- Rusty Red #AF2F0D ΔE 0.028
- Dull Red #BB3F3F ΔE 0.033
- Firebrick #B22222 ΔE 0.042
- Brick #A03623 ΔE 0.042
- Russet #A13905 ΔE 0.043
- Burnt Umber #A0450E ΔE 0.043
- Rust Red #AA2704 ΔE 0.044
Use #B23E26 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.