#B91509
Closest named color: Scarlet (#BE0119). oklch(50.1% 0.195 29.8), rgb(185, 21, 9).
Aa
White text reads best on this color (6.61:1).
About this color
#B91509 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.195 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.017 away. White text reads best on it, at 6.61:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #B91509 |
| RGB | rgb(185, 21, 9) |
| HSL | hsl(4, 91%, 38%) |
| OKLCH | oklch(50.1% 0.195 29.8) |
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 #B91509 | 6.61:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #B91509 | 3.17:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #B91509 text on white | 6.61:1 | AA | Lc 80.6 | Fine for body text |
| #B91509 text on black | 3.17:1 | AA large text | Lc -21.3 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC5
oklch(88.5% 0.052 29.9)
-
Step 300
300
#F8AA9D
oklch(81% 0.095 29.7)
-
Step 400
400
#F07866
oklch(70.7% 0.151 30.1)
-
Step 500
500
#E74D3B
oklch(63.2% 0.193 30)
-
Step 600
600
#D22215
oklch(55.5% 0.21 29.7)
-
Step 700
700 (this color)
#B91509
oklch(50.1% 0.195 29.8)
-
Step 800
800
#93140B
oklch(42.6% 0.162 29.6)
-
Step 900
900
#761C13
oklch(37.6% 0.126 29.8)
-
Step 950
950
#46130D
oklch(27.1% 0.08 29.8)
#B91509 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) | #504602 | 0.214 |
| Deuteranopia (no green cones) | #776900 | 0.190 |
| Tritanopia (no blue cones) | #CD0017 | 0.041 |
| Achromatopsia (no color) | #5D5D5D | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B91509
#B91509
oklch(50.1% 0.195 29.8)
- #00707E
#00707E
oklch(49.9% 0.086 209.8)
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 #B91509, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.017
- Firebrick #B22222 ΔE 0.019
- Rufous #AE2012 ΔE 0.022
- Rusty Red #AF2F0D ΔE 0.030
- Rust Red #AA2704 ΔE 0.032
- Lipstick Red #C0022F ΔE 0.035
- Brown #A52A2A ΔE 0.043
- Rose Red #BE013C ΔE 0.050
Use #B91509 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.