#B30B2C
Closest named color: Rouge (#AB1239). oklch(48.8% 0.191 20.9), rgb(179, 11, 44).
Aa
White text reads best on this color (6.99:1).
About this color
#B30B2C is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.191 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.022 away. White text reads best on it, at 6.99:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #B30B2C |
| RGB | rgb(179, 11, 44) |
| HSL | hsl(348, 88%, 37%) |
| OKLCH | oklch(48.8% 0.191 20.9) |
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 #B30B2C | 6.99:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #B30B2C | 3.00:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #B30B2C text on white | 6.99:1 | AA | Lc 82.0 | Fine for body text |
| #B30B2C text on black | 3.00:1 | AA large text | Lc -19.9 | 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
#EF7778
oklch(70.8% 0.148 21)
-
Step 500
500
#E54C55
oklch(63.1% 0.189 21.1)
-
Step 600
600
#D1223A
oklch(55.7% 0.206 21.1)
-
Step 700
700 (this color)
#B30B2C
oklch(48.8% 0.191 20.9)
-
Step 800
800
#921426
oklch(42.7% 0.158 20.9)
-
Step 900
900
#751B23
oklch(37.6% 0.124 20.9)
-
Step 950
950
#451215
oklch(26.9% 0.078 20.8)
#B30B2C 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) | #49432B | 0.213 |
| Deuteranopia (no green cones) | #706526 | 0.194 |
| Tritanopia (no blue cones) | #C5001D | 0.039 |
| Achromatopsia (no color) | #595959 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B30B2C
#B30B2C
oklch(48.8% 0.191 20.9)
- #006E73
#006E73
oklch(48.9% 0.083 200.3)
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 #B30B2C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.022
- Firebrick #B22222 ΔE 0.024
- Lipstick Red #C0022F ΔE 0.027
- Scarlet #BE0119 ΔE 0.028
- Rose Red #BE013C ΔE 0.030
- Rufous #AE2012 ΔE 0.033
- Brown #A52A2A ΔE 0.036
- Raspberry #B00149 ΔE 0.042
Use #B30B2C 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.