#B3637F
Closest named color: Dusky Rose (#BA6873). oklch(59.9% 0.108 358.5), rgb(179, 99, 127).
Aa
Black text reads best on this color (5.00:1).
About this color
#B3637F is a medium-dark, moderately saturated red. In OKLCH its lightness is 60%, its chroma 0.108 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Dusky Rose (#BA6873), ΔE 0.029 away. Black text reads best on it, at 5.00:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.108) |
| Temperature | warm |
| Nearest name | Dusky Rose (#BA6873) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #B3637F |
| RGB | rgb(179, 99, 127) |
| HSL | hsl(339, 34%, 55%) |
| OKLCH | oklch(59.9% 0.108 358.5) |
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 #B3637F | 4.19:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #B3637F | 5.00:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #B3637F text on white | 4.19:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #B3637F text on black | 5.00:1 | AA | Lc -33.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FAF4F5
oklch(97.2% 0.007 5.6)
-
Step 100
100
#F3E6EA
oklch(93.6% 0.015 356.6)
-
Step 200
200
#EBD2D9
oklch(88.6% 0.029 358.9)
-
Step 300
300
#DEB3C0
oklch(80.9% 0.052 358.3)
-
Step 400
400
#CC8BA0
oklch(70.8% 0.083 358.4)
-
Step 500
500 (this color)
#B3637F
oklch(59.9% 0.108 358.5)
-
Step 600
600
#A95372
oklch(55.6% 0.118 358.8)
-
Step 700
700
#904360
oklch(49% 0.109 358.1)
-
Step 800
800
#75384E
oklch(42.7% 0.089 358.7)
-
Step 900
900
#5F3141
oklch(37.8% 0.069 358.8)
-
Step 950
950
#381D26
oklch(27.1% 0.044 359.1)
#B3637F 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) | #6E7380 | 0.118 |
| Deuteranopia (no green cones) | #82817D | 0.109 |
| Tritanopia (no blue cones) | #BF5E6D | 0.032 |
| Achromatopsia (no color) | #7C7C7C | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3637F
#B3637F
oklch(59.9% 0.108 358.5)
- #0D9581
#0D9581
oklch(60.1% 0.108 178.5)
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 #B3637F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Rose #BA6873 ΔE 0.029
- Mauve #AE7181 ΔE 0.034
- Dusty Rose #C0737A ΔE 0.051
- Light Plum #9D5783 ΔE 0.055
- Deep Rose #C74767 ΔE 0.063
- Dark Rose #B5485D ΔE 0.064
- Indian Red #CD5C5C ΔE 0.065
- Dark Lilac #9C6DA5 ΔE 0.067
Use #B3637F 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.