#B41528
Closest named color: Firebrick (#B22222). oklch(49.3% 0.189 23.2), rgb(180, 21, 40).
Aa
White text reads best on this color (6.82:1).
About this color
#B41528 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.189 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.015 away. White text reads best on it, at 6.82:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #B41528 |
| RGB | rgb(180, 21, 40) |
| HSL | hsl(353, 79%, 39%) |
| OKLCH | oklch(49.3% 0.189 23.2) |
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 #B41528 | 6.82:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #B41528 | 3.07:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #B41528 text on white | 6.82:1 | AA | Lc 81.5 | Fine for body text |
| #B41528 text on black | 3.07:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E2
oklch(93.5% 0.026 20.5)
-
Step 200
200
#F9CDC9
oklch(88.5% 0.05 24.2)
-
Step 300
300
#F6AAA5
oklch(81% 0.09 23.4)
-
Step 400
400
#EE7875
oklch(70.8% 0.146 23)
-
Step 500
500
#E44E51
oklch(63.1% 0.186 23.1)
-
Step 600
600
#D02635
oklch(55.7% 0.203 23.1)
-
Step 700
700 (this color)
#B41528
oklch(49.3% 0.189 23.2)
-
Step 800
800
#911722
oklch(42.6% 0.156 23.1)
-
Step 900
900
#751D20
oklch(37.7% 0.122 23.5)
-
Step 950
950
#451314
oklch(27% 0.077 22.7)
#B41528 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) | #4C4527 | 0.209 |
| Deuteranopia (no green cones) | #726621 | 0.189 |
| Tritanopia (no blue cones) | #C7001F | 0.038 |
| Achromatopsia (no color) | #5B5B5B | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B41528
#B41528
oklch(49.3% 0.189 23.2)
- #006F77
#006F77
oklch(49.4% 0.084 203.5)
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 #B41528, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.015
- Scarlet #BE0119 ΔE 0.022
- Rufous #AE2012 ΔE 0.025
- Lipstick Red #C0022F ΔE 0.026
- Rouge #AB1239 ΔE 0.030
- Brown #A52A2A ΔE 0.032
- Rose Red #BE013C ΔE 0.033
- Rust Red #AA2704 ΔE 0.039
Use #B41528 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.