#B0191F
Closest named color: Firebrick (#B22222). oklch(48.7% 0.184 26.1), rgb(176, 25, 31).
Aa
White text reads best on this color (6.98:1).
About this color
#B0191F is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.184 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.011 away. White text reads best on it, at 6.98:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #B0191F |
| RGB | rgb(176, 25, 31) |
| HSL | hsl(358, 75%, 39%) |
| OKLCH | oklch(48.7% 0.184 26.1) |
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 #B0191F | 6.98:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #B0191F | 3.00:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #B0191F text on white | 6.98:1 | AA | Lc 82.3 | Fine for body text |
| #B0191F text on black | 3.00:1 | AA large text | Lc -19.6 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F8CDC8
oklch(88.4% 0.049 25.9)
-
Step 300
300
#F5ABA3
oklch(81% 0.089 26.1)
-
Step 400
400
#EC7A71
oklch(70.7% 0.142 26)
-
Step 500
500
#E2514B
oklch(63% 0.182 26.1)
-
Step 600
600
#CE2C2E
oklch(55.7% 0.198 26)
-
Step 700
700 (this color)
#B0191F
oklch(48.7% 0.184 26.1)
-
Step 800
800
#901B1D
oklch(42.7% 0.152 25.9)
-
Step 900
900
#741F1D
oklch(37.7% 0.119 26.1)
-
Step 950
950
#441412
oklch(27% 0.075 25.8)
#B0191F 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) | #4D451D | 0.200 |
| Deuteranopia (no green cones) | #716517 | 0.183 |
| Tritanopia (no blue cones) | #C2001E | 0.036 |
| Achromatopsia (no color) | #595959 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0191F
#B0191F
oklch(48.7% 0.184 26.1)
- #006D77
#006D77
oklch(48.8% 0.084 205.9)
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 #B0191F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.011
- Rufous #AE2012 ΔE 0.014
- Brown #A52A2A ΔE 0.025
- Rust Red #AA2704 ΔE 0.027
- Scarlet #BE0119 ΔE 0.028
- Rusty Red #AF2F0D ΔE 0.033
- Rouge #AB1239 ΔE 0.035
- Lipstick Red #C0022F ΔE 0.037
Use #B0191F 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.