#B03E30
Closest named color: Dull Red (#BB3F3F). oklch(52.3% 0.151 30), rgb(176, 62, 48).
Aa
White text reads best on this color (5.86:1).
About this color
#B03E30 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.151 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.028 away. White text reads best on it, at 5.86:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.57:1 |
| White text | 5.86:1 |
Values
| HEX | #B03E30 |
| RGB | rgb(176, 62, 48) |
| HSL | hsl(7, 57%, 44%) |
| OKLCH | oklch(52.3% 0.151 30) |
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 #B03E30 | 5.86:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #B03E30 | 3.57:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #B03E30 text on white | 5.86:1 | AA | Lc 78.5 | Fine for body text |
| #B03E30 text on black | 3.57:1 | AA large text | Lc -23.3 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F3D0C9
oklch(88.5% 0.041 31.2)
-
Step 300
300
#ECAFA5
oklch(80.8% 0.073 29.3)
-
Step 400
400
#E08374
oklch(70.6% 0.118 30)
-
Step 500
500
#D56150
oklch(63.2% 0.15 30.3)
-
Step 600
600
#C04334
oklch(55.6% 0.163 29.9)
-
Step 700
700 (this color)
#B03E30
oklch(52.3% 0.151 30)
-
Step 800
800
#862C21
oklch(42.6% 0.125 30)
-
Step 900
900
#6C2920
oklch(37.7% 0.098 30)
-
Step 950
950
#401913
oklch(27.1% 0.062 30.5)
#B03E30 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) | #5E552E | 0.158 |
| Deuteranopia (no green cones) | #7A6E2C | 0.146 |
| Tritanopia (no blue cones) | #C1213B | 0.052 |
| Achromatopsia (no color) | #656565 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B03E30
#B03E30
oklch(52.3% 0.151 30)
- #007786
#007786
oklch(52.2% 0.09 210)
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 #B03E30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.028
- Rusty Red #AF2F0D ΔE 0.031
- Sinopia #BB3E03 ΔE 0.035
- Firebrick #B22222 ΔE 0.039
- Brick #A03623 ΔE 0.040
- Dusty Red #B9484E ΔE 0.042
- Brown #A52A2A ΔE 0.044
- Russet #A13905 ΔE 0.045
Use #B03E30 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.