#B0002B
Closest named color: Rouge (#AB1239). oklch(47.9% 0.192 20.2), rgb(176, 0, 43).
Aa
White text reads best on this color (7.28:1).
About this color
#B0002B is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.192 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.019 away. White text reads best on it, at 7.28:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #B0002B |
| RGB | rgb(176, 0, 43) |
| HSL | hsl(345, 100%, 35%) |
| OKLCH | oklch(47.9% 0.192 20.2) |
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 #B0002B | 7.28:1 | AAA | Lc -87.8 | Fine for body text |
| Black text on #B0002B | 2.88:1 | Fails | Lc 21.3 | Dividers and decoration only |
| #B0002B text on white | 7.28:1 | AAA | Lc 82.7 | Fine for body text |
| #B0002B text on black | 2.88:1 | Fails | Lc -19.2 | 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
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FACCCB
oklch(88.5% 0.052 19.6)
-
Step 300
300
#F7A9A7
oklch(80.9% 0.093 20.9)
-
Step 400
400
#EF7679
oklch(70.7% 0.149 20.1)
-
Step 500
500
#E64B57
oklch(63.2% 0.191 20.2)
-
Step 600
600
#D1203C
oklch(55.6% 0.207 20.3)
-
Step 700
700 (this color)
#B0002B
oklch(47.9% 0.192 20.2)
-
Step 800
800
#921327
oklch(42.6% 0.159 20.3)
-
Step 900
900
#761B24
oklch(37.8% 0.125 20.4)
-
Step 950
950
#451216
oklch(27% 0.078 19.6)
#B0002B 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) | #46412B | 0.215 |
| Deuteranopia (no green cones) | #6D6225 | 0.195 |
| Tritanopia (no blue cones) | #C20018 | 0.043 |
| Achromatopsia (no color) | #565656 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0002B
#B0002B
oklch(47.9% 0.192 20.2)
- #006B70
#006B70
oklch(48% 0.082 200.5)
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 #B0002B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.019
- Firebrick #B22222 ΔE 0.031
- Lipstick Red #C0022F ΔE 0.035
- Scarlet #BE0119 ΔE 0.035
- Rose Red #BE013C ΔE 0.036
- Rufous #AE2012 ΔE 0.036
- Brown #A52A2A ΔE 0.037
- Raspberry #B00149 ΔE 0.040
Use #B0002B 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.