#B12A42
Closest named color: Rouge (#AB1239). oklch(50.6% 0.17 16.2), rgb(177, 42, 66).
Aa
White text reads best on this color (6.40:1).
About this color
#B12A42 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.170 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.031 away. White text reads best on it, at 6.40:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #B12A42 |
| RGB | rgb(177, 42, 66) |
| HSL | hsl(349, 62%, 43%) |
| OKLCH | oklch(50.6% 0.17 16.2) |
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 #B12A42 | 6.40:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #B12A42 | 3.27:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #B12A42 text on white | 6.40:1 | AA | Lc 80.5 | Fine for body text |
| #B12A42 text on black | 3.27:1 | AA large text | Lc -21.4 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F6CECF
oklch(88.6% 0.045 16.3)
-
Step 300
300
#F1ABAE
oklch(80.8% 0.083 16.2)
-
Step 400
400
#E77C84
oklch(70.8% 0.132 16.3)
-
Step 500
500
#DC5565
oklch(63.1% 0.169 16.3)
-
Step 600
600
#C7344D
oklch(55.6% 0.183 16.2)
-
Step 700
700 (this color)
#B12A42
oklch(50.6% 0.17 16.2)
-
Step 800
800
#8B2133
oklch(42.6% 0.141 16.3)
-
Step 900
900
#70222D
oklch(37.7% 0.11 16)
-
Step 950
950
#42151A
oklch(26.9% 0.07 16.4)
#B12A42 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) | #504D42 | 0.189 |
| Deuteranopia (no green cones) | #72693E | 0.173 |
| Tritanopia (no blue cones) | #C20034 | 0.039 |
| Achromatopsia (no color) | #5F5F5F | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B12A42
#B12A42
oklch(50.6% 0.17 16.2)
- #007475
#007475
oklch(50.6% 0.086 195.8)
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 #B12A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.031
- Rose Red #BE013C ΔE 0.033
- Firebrick #B22222 ΔE 0.035
- Lipstick Red #C0022F ΔE 0.038
- Brown #A52A2A ΔE 0.039
- Raspberry #B00149 ΔE 0.040
- Light Burgundy #A8415B ΔE 0.044
- Dull Red #BB3F3F ΔE 0.046
Use #B12A42 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.