#B23002
Closest named color: Rusty Red (#AF2F0D). oklch(50.7% 0.173 35.9), rgb(178, 48, 2).
Aa
White text reads best on this color (6.33:1).
About this color
#B23002 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.173 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.008 away. White text reads best on it, at 6.33:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #B23002 |
| RGB | rgb(178, 48, 2) |
| HSL | hsl(16, 98%, 35%) |
| OKLCH | oklch(50.7% 0.173 35.9) |
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 #B23002 | 6.33:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #B23002 | 3.31:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #B23002 text on white | 6.33:1 | AA | Lc 80.1 | Fine for body text |
| #B23002 text on black | 3.31:1 | AA large text | Lc -21.7 | 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 700.
-
Step 50
50
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC4
oklch(88.5% 0.047 36.3)
-
Step 300
300
#F1AE9B
oklch(80.9% 0.084 36.5)
-
Step 400
400
#E78064
oklch(70.7% 0.134 36.1)
-
Step 500
500
#DD5A37
oklch(63.1% 0.172 35.8)
-
Step 600
600
#C83A0A
oklch(55.6% 0.186 36)
-
Step 700
700 (this color)
#B23002
oklch(50.7% 0.173 35.9)
-
Step 800
800
#8C2504
oklch(42.6% 0.143 35.8)
-
Step 900
900
#712510
oklch(37.8% 0.112 35.9)
-
Step 950
950
#42170B
oklch(26.9% 0.07 36.4)
#B23002 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) | #594D00 | 0.177 |
| Deuteranopia (no green cones) | #786A00 | 0.160 |
| Tritanopia (no blue cones) | #C5002A | 0.060 |
| Achromatopsia (no color) | #606060 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B23002
#B23002
oklch(50.7% 0.173 35.9)
- #007186
#007186
oklch(50.6% 0.09 216.6)
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 #B23002, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.008
- Rust Red #AA2704 ΔE 0.024
- Rufous #AE2012 ΔE 0.028
- Firebrick #B22222 ΔE 0.030
- Sinopia #BB3E03 ΔE 0.033
- Russet #A13905 ΔE 0.034
- Brick #A03623 ΔE 0.038
- Brown #A52A2A ΔE 0.042
Use #B23002 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.