#B23D3E
Closest named color: Dull Red (#BB3F3F). oklch(52.7% 0.152 23.5), rgb(178, 61, 62).
Aa
White text reads best on this color (5.78:1).
About this color
#B23D3E is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.152 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.019 away. White text reads best on it, at 5.78:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #B23D3E |
| RGB | rgb(178, 61, 62) |
| HSL | hsl(359, 49%, 47%) |
| OKLCH | oklch(52.7% 0.152 23.5) |
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 #B23D3E | 5.78:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #B23D3E | 3.63:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #B23D3E text on white | 5.78:1 | AA | Lc 78.0 | Fine for body text |
| #B23D3E text on black | 3.63:1 | 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
#F7E5E3
oklch(93.6% 0.02 25.2)
-
Step 200
200
#F2D0CD
oklch(88.5% 0.039 23.9)
-
Step 300
300
#EAB0AC
oklch(80.9% 0.068 23.2)
-
Step 400
400
#DD8480
oklch(70.7% 0.11 23)
-
Step 500
500
#D16360
oklch(63.2% 0.14 23.5)
-
Step 600
600 (this color)
#B23D3E
oklch(52.7% 0.152 23.5)
-
Step 700
700
#A23738
oklch(49.2% 0.142 23.4)
-
Step 800
800
#832E2E
oklch(42.6% 0.118 23.5)
-
Step 900
900
#6A2A29
oklch(37.6% 0.092 23.4)
-
Step 950
950
#3E1A18
oklch(27% 0.057 24.8)
#B23D3E 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) | #5C563D | 0.164 |
| Deuteranopia (no green cones) | #796F3B | 0.152 |
| Tritanopia (no blue cones) | #C3223F | 0.044 |
| Achromatopsia (no color) | #666666 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B23D3E
#B23D3E
oklch(52.7% 0.152 23.5)
- #007A82
#007A82
oklch(52.8% 0.09 202.8)
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 #B23D3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.019
- Dusty Red #B9484E ΔE 0.030
- Dark Rose #B5485D ΔE 0.042
- Firebrick #B22222 ΔE 0.042
- Light Maroon #A24857 ΔE 0.043
- Light Burgundy #A8415B ΔE 0.043
- Rusty Red #AF2F0D ΔE 0.044
- Brown #A52A2A ΔE 0.047
Use #B23D3E 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.