#B01540
Closest named color: Rouge (#AB1239). oklch(49% 0.185 13.7), rgb(176, 21, 64).
Aa
White text reads best on this color (6.93:1).
About this color
#B01540 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.185 and its hue 14°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.014 away. White text reads best on it, at 6.93:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #B01540 |
| RGB | rgb(176, 21, 64) |
| HSL | hsl(343, 79%, 39%) |
| OKLCH | oklch(49% 0.185 13.7) |
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 #B01540 | 6.93:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #B01540 | 3.02:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #B01540 text on white | 6.93:1 | AA | Lc 82.1 | Fine for body text |
| #B01540 text on black | 3.02:1 | AA large text | Lc -19.8 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FBE3E5
oklch(93.6% 0.026 11.9)
-
Step 200
200
#F8CCCF
oklch(88.4% 0.05 13.5)
-
Step 300
300
#F5A9AF
oklch(80.9% 0.09 14.1)
-
Step 400
400
#EB7886
oklch(70.7% 0.142 13.8)
-
Step 500
500
#E14E68
oklch(63.1% 0.182 13.6)
-
Step 600
600
#CD2750
oklch(55.7% 0.199 13.5)
-
Step 700
700 (this color)
#B01540
oklch(49% 0.185 13.7)
-
Step 800
800
#8F1835
oklch(42.7% 0.153 13.7)
-
Step 900
900
#731D2E
oklch(37.7% 0.119 13.7)
-
Step 950
950
#44131B
oklch(27% 0.075 14)
#B01540 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) | #474640 | 0.208 |
| Deuteranopia (no green cones) | #6D653C | 0.189 |
| Tritanopia (no blue cones) | #C1002A | 0.042 |
| Achromatopsia (no color) | #5A5A5A | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B01540
#B01540
oklch(49% 0.185 13.7)
- #006F6E
#006F6E
oklch(49% 0.084 193.7)
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 #B01540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.014
- Raspberry #B00149 ΔE 0.020
- Rose Red #BE013C ΔE 0.028
- Lipstick Red #C0022F ΔE 0.038
- Firebrick #B22222 ΔE 0.043
- Brown #A52A2A ΔE 0.044
- Cranberry #9E003A ΔE 0.045
- Scarlet #BE0119 ΔE 0.049
Use #B01540 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.