#A13C37
Closest named color: Brick (#A03623). oklch(49.6% 0.135 26.1), rgb(161, 60, 55).
Aa
White text reads best on this color (6.52:1).
About this color
#A13C37 is a medium-dark, moderately saturated red. In OKLCH its lightness is 50%, its chroma 0.135 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.022 away. White text reads best on it, at 6.52:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #A13C37 |
| RGB | rgb(161, 60, 55) |
| HSL | hsl(3, 49%, 42%) |
| OKLCH | oklch(49.6% 0.135 26.1) |
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 #A13C37 | 6.52:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #A13C37 | 3.21:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #A13C37 text on white | 6.52:1 | AA | Lc 81.6 | Fine for body text |
| #A13C37 text on black | 3.21:1 | AA large text | Lc -20.3 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E5E3
oklch(93.5% 0.019 25.6)
-
Step 200
200
#F0D1CD
oklch(88.6% 0.035 26.6)
-
Step 300
300
#E8B1AB
oklch(80.9% 0.065 25.7)
-
Step 400
400
#DA867E
oklch(70.6% 0.105 25.9)
-
Step 500
500
#CE665E
oklch(63.2% 0.133 26)
-
Step 600
600
#B94A44
oklch(55.6% 0.145 26)
-
Step 700
700 (this color)
#A13C37
oklch(49.6% 0.135 26.1)
-
Step 800
800
#81312D
oklch(42.6% 0.112 25.8)
-
Step 900
900
#682C28
oklch(37.6% 0.087 25.9)
-
Step 950
950
#3D1B18
oklch(27% 0.054 26.5)
#A13C37 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) | #565036 | 0.144 |
| Deuteranopia (no green cones) | #706634 | 0.133 |
| Tritanopia (no blue cones) | #B1263C | 0.044 |
| Achromatopsia (no color) | #5E5E5E | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A13C37
#A13C37
oklch(49.6% 0.135 26.1)
- #00707A
#00707A
oklch(49.8% 0.085 205.6)
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 #A13C37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.022
- Brown #A52A2A ΔE 0.029
- Russet #A13905 ΔE 0.039
- Rusty Red #AF2F0D ΔE 0.041
- Light Maroon #A24857 ΔE 0.043
- Rust Red #AA2704 ΔE 0.044
- Firebrick #B22222 ΔE 0.044
- Rufous #AE2012 ΔE 0.046
Use #A13C37 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.