#B03341
Closest named color: Firebrick (#B22222). oklch(51.3% 0.161 18.8), rgb(176, 51, 65).
Aa
White text reads best on this color (6.18:1).
About this color
#B03341 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.161 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.035 away. White text reads best on it, at 6.18:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.161) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #B03341 |
| RGB | rgb(176, 51, 65) |
| HSL | hsl(353, 55%, 45%) |
| OKLCH | oklch(51.3% 0.161 18.8) |
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 #B03341 | 6.18:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #B03341 | 3.39:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #B03341 text on white | 6.18:1 | AA | Lc 79.7 | Fine for body text |
| #B03341 text on black | 3.39:1 | AA large text | Lc -22.1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECE
oklch(88.5% 0.044 18)
-
Step 300
300
#EFADAD
oklch(81% 0.078 18.9)
-
Step 400
400
#E37F82
oklch(70.7% 0.124 18.8)
-
Step 500
500
#D85A63
oklch(63% 0.159 18.6)
-
Step 600
600
#C43B4A
oklch(55.7% 0.173 18.8)
-
Step 700
700 (this color)
#B03341
oklch(51.3% 0.161 18.8)
-
Step 800
800
#892631
oklch(42.7% 0.133 18.7)
-
Step 900
900
#6E252B
oklch(37.6% 0.104 18.8)
-
Step 950
950
#411719
oklch(27% 0.066 19.7)
#B03341 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) | #555041 | 0.175 |
| Deuteranopia (no green cones) | #746B3E | 0.162 |
| Tritanopia (no blue cones) | #C10E39 | 0.042 |
| Achromatopsia (no color) | #616161 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B03341
#B03341
oklch(51.3% 0.161 18.8)
- #00767A
#00767A
oklch(51.4% 0.087 198.9)
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 #B03341, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.035
- Dull Red #BB3F3F ΔE 0.035
- Brown #A52A2A ΔE 0.037
- Light Burgundy #A8415B ΔE 0.038
- Rouge #AB1239 ΔE 0.042
- Rose Red #BE013C ΔE 0.044
- Lipstick Red #C0022F ΔE 0.045
- Dusty Red #B9484E ΔE 0.045
Use #B03341 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.