#B13747
Closest named color: Dull Red (#BB3F3F). oklch(52% 0.157 17.1), rgb(177, 55, 71).
Aa
White text reads best on this color (5.98:1).
About this color
#B13747 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.157 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.031 away. White text reads best on it, at 5.98:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.50:1 |
| White text | 5.98:1 |
Values
| HEX | #B13747 |
| RGB | rgb(177, 55, 71) |
| HSL | hsl(352, 53%, 45%) |
| OKLCH | oklch(52% 0.157 17.1) |
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 #B13747 | 5.98:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #B13747 | 3.50:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #B13747 text on white | 5.98:1 | AA | Lc 78.9 | Fine for body text |
| #B13747 text on black | 3.50:1 | AA large text | Lc -22.9 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F8E4E4
oklch(93.5% 0.022 17.6)
-
Step 200
200
#F4CFCF
oklch(88.6% 0.042 18)
-
Step 300
300
#EEADAF
oklch(80.9% 0.077 16.8)
-
Step 400
400
#E27F85
oklch(70.6% 0.122 16.8)
-
Step 500
500
#D75B67
oklch(63.1% 0.156 16.9)
-
Step 600
600
#C23C4E
oklch(55.5% 0.17 17)
-
Step 700
700 (this color)
#B13747
oklch(52% 0.157 17.1)
-
Step 800
800
#882734
oklch(42.7% 0.131 17.1)
-
Step 900
900
#6D262E
oklch(37.7% 0.101 16.7)
-
Step 950
950
#40171B
oklch(26.9% 0.064 16.5)
#B13747 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) | #575347 | 0.172 |
| Deuteranopia (no green cones) | #766D44 | 0.159 |
| Tritanopia (no blue cones) | #C21A3E | 0.041 |
| Achromatopsia (no color) | #636363 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B13747
#B13747
oklch(52% 0.157 17.1)
- #00787A
#00787A
oklch(51.9% 0.088 196.8)
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 #B13747, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.031
- Light Burgundy #A8415B ΔE 0.032
- Dusty Red #B9484E ΔE 0.037
- Dark Rose #B5485D ΔE 0.039
- Light Maroon #A24857 ΔE 0.040
- Firebrick #B22222 ΔE 0.043
- Brown #A52A2A ΔE 0.046
- Rose Red #BE013C ΔE 0.047
Use #B13747 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.