#B02500
Closest named color: Rust Red (#AA2704). oklch(49.3% 0.179 33.6), rgb(176, 37, 0).
Aa
White text reads best on this color (6.75:1).
About this color
#B02500 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.179 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Red (#AA2704), ΔE 0.012 away. White text reads best on it, at 6.75:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Rust Red (#AA2704) |
| Black text | 3.11:1 |
| White text | 6.75:1 |
Values
| HEX | #B02500 |
| RGB | rgb(176, 37, 0) |
| HSL | hsl(13, 100%, 35%) |
| OKLCH | oklch(49.3% 0.179 33.6) |
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 #B02500 | 6.75:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #B02500 | 3.11:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #B02500 text on white | 6.75:1 | AA | Lc 81.6 | Fine for body text |
| #B02500 text on black | 3.11:1 | AA large text | Lc -20.3 | 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
#FAE4DF
oklch(93.5% 0.025 32.9)
-
Step 200
200
#F7CEC5
oklch(88.4% 0.048 32.5)
-
Step 300
300
#F3AD9C
oklch(81% 0.086 34.1)
-
Step 400
400
#EA7D65
oklch(70.7% 0.14 33.6)
-
Step 500
500
#E0573A
oklch(63.2% 0.177 33.6)
-
Step 600
600
#CB3410
oklch(55.6% 0.193 33.7)
-
Step 700
700 (this color)
#B02500
oklch(49.3% 0.179 33.6)
-
Step 800
800
#8E2108
oklch(42.6% 0.148 33.5)
-
Step 900
900
#722312
oklch(37.7% 0.115 33.7)
-
Step 950
950
#43160C
oklch(27% 0.072 34.1)
#B02500 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) | #534800 | 0.188 |
| Deuteranopia (no green cones) | #746600 | 0.168 |
| Tritanopia (no blue cones) | #C30021 | 0.048 |
| Achromatopsia (no color) | #5B5B5B | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B02500
#B02500
oklch(49.3% 0.179 33.6)
- #006E7F
#006E7F
oklch(49.5% 0.087 213.1)
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 #B02500, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Red #AA2704 ΔE 0.012
- Rusty Red #AF2F0D ΔE 0.013
- Rufous #AE2012 ΔE 0.013
- Firebrick #B22222 ΔE 0.022
- Brown #A52A2A ΔE 0.033
- Brick #A03623 ΔE 0.036
- Burnt Red #9F2305 ΔE 0.037
- Russet #A13905 ΔE 0.038
Use #B02500 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.