#B23D2B
Closest named color: Rusty Red (#AF2F0D). oklch(52.4% 0.156 31.4), rgb(178, 61, 43).
Aa
White text reads best on this color (5.84:1).
About this color
#B23D2B is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.156 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.028 away. White text reads best on it, at 5.84:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #B23D2B |
| RGB | rgb(178, 61, 43) |
| HSL | hsl(8, 61%, 43%) |
| OKLCH | oklch(52.4% 0.156 31.4) |
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 #B23D2B | 5.84:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #B23D2B | 3.59:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #B23D2B text on white | 5.84:1 | AA | Lc 78.3 | Fine for body text |
| #B23D2B text on black | 3.59:1 | AA large text | Lc -23.5 | 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
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F2D0CA
oklch(88.5% 0.039 29.7)
-
Step 300
300
#EAB1A5
oklch(81% 0.069 32.1)
-
Step 400
400
#DD8575
oklch(70.6% 0.112 31.1)
-
Step 500
500
#D26451
oklch(63.2% 0.143 31.4)
-
Step 600
600 (this color)
#B23D2B
oklch(52.4% 0.156 31.4)
-
Step 700
700
#A33827
oklch(49.2% 0.145 31.6)
-
Step 800
800
#842F22
oklch(42.7% 0.12 31.2)
-
Step 900
900
#6A2B20
oklch(37.6% 0.093 31.8)
-
Step 950
950
#3F1A14
oklch(27.1% 0.059 30.8)
#B23D2B 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) | #5E5528 | 0.162 |
| Deuteranopia (no green cones) | #7B6E27 | 0.148 |
| Tritanopia (no blue cones) | #C41D3A | 0.056 |
| Achromatopsia (no color) | #656565 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B23D2B
#B23D2B
oklch(52.4% 0.156 31.4)
- #007888
#007888
oklch(52.5% 0.091 210.9)
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 #B23D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.028
- Dull Red #BB3F3F ΔE 0.029
- Sinopia #BB3E03 ΔE 0.030
- Firebrick #B22222 ΔE 0.039
- Brick #A03623 ΔE 0.042
- Rust Red #AA2704 ΔE 0.044
- Dusty Red #B9484E ΔE 0.044
- Rufous #AE2012 ΔE 0.044
Use #B23D2B 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.