#B9010F
Closest named color: Scarlet (#BE0119). oklch(49.4% 0.201 27.5), rgb(185, 1, 15).
Aa
White text reads best on this color (6.83:1).
About this color
#B9010F is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.201 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.012 away. White text reads best on it, at 6.83:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.201) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #B9010F |
| RGB | rgb(185, 1, 15) |
| HSL | hsl(355, 99%, 36%) |
| OKLCH | oklch(49.4% 0.201 27.5) |
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 #B9010F | 6.83:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #B9010F | 3.07:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #B9010F text on white | 6.83:1 | AA | Lc 80.9 | Fine for body text |
| #B9010F text on black | 3.07:1 | AA large text | Lc -21.0 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#F9A89E
oklch(80.8% 0.098 27.2)
-
Step 400
400
#F27569
oklch(70.6% 0.156 27.3)
-
Step 500
500
#E9483F
oklch(63% 0.199 27.6)
-
Step 600
600
#D5181C
oklch(55.6% 0.217 27.6)
-
Step 700
700 (this color)
#B9010F
oklch(49.4% 0.201 27.5)
-
Step 800
800
#950D10
oklch(42.7% 0.167 27.6)
-
Step 900
900
#781916
oklch(37.8% 0.13 27.4)
-
Step 950
950
#47110E
oklch(27.1% 0.083 27.3)
#B9010F 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) | #4C430A | 0.223 |
| Deuteranopia (no green cones) | #756700 | 0.198 |
| Tritanopia (no blue cones) | #CD000D | 0.042 |
| Achromatopsia (no color) | #5B5B5B | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9010F
#B9010F
oklch(49.4% 0.201 27.5)
- #006F7A
#006F7A
oklch(49.5% 0.085 206.8)
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 #B9010F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.012
- Firebrick #B22222 ΔE 0.022
- Rufous #AE2012 ΔE 0.025
- Lipstick Red #C0022F ΔE 0.030
- Rust Red #AA2704 ΔE 0.038
- Rusty Red #AF2F0D ΔE 0.039
- Rose Red #BE013C ΔE 0.044
- Brown #A52A2A ΔE 0.044
Use #B9010F 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.