#C13C37
Closest named color: Dull Red (#BB3F3F). oklch(55% 0.17 26.5), rgb(193, 60, 55).
Aa
White text reads best on this color (5.29:1).
About this color
#C13C37 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.170 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.014 away. White text reads best on it, at 5.29:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #C13C37 |
| RGB | rgb(193, 60, 55) |
| HSL | hsl(2, 56%, 49%) |
| OKLCH | oklch(55% 0.17 26.5) |
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 #C13C37 | 5.29:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #C13C37 | 3.96:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #C13C37 text on white | 5.29:1 | AA | Lc 75.2 | Fine for body text |
| #C13C37 text on black | 3.96:1 | AA large text | Lc -26.5 | 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 600.
-
Step 50
50
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F9E5E2
oklch(93.7% 0.022 27.8)
-
Step 200
200
#F4CFCA
oklch(88.5% 0.042 27)
-
Step 300
300
#EEAEA6
oklch(80.8% 0.076 26.9)
-
Step 400
400
#E38177
oklch(70.8% 0.123 26.7)
-
Step 500
500
#D85D54
oklch(63.2% 0.157 26.7)
-
Step 600
600 (this color)
#C13C37
oklch(55% 0.17 26.5)
-
Step 700
700
#A82F2B
oklch(49.1% 0.158 26.7)
-
Step 800
800
#892925
oklch(42.8% 0.131 26.6)
-
Step 900
900
#6E2723
oklch(37.8% 0.102 26.3)
-
Step 950
950
#411815
oklch(27.1% 0.065 26.5)
#C13C37 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) | #625935 | 0.181 |
| Deuteranopia (no green cones) | #837633 | 0.166 |
| Tritanopia (no blue cones) | #D4123C | 0.052 |
| Achromatopsia (no color) | #6B6B6B | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C13C37
#C13C37
oklch(55% 0.17 26.5)
- #00818D
#00818D
oklch(55.1% 0.094 206.2)
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 #C13C37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.014
- Dusty Red #B9484E ΔE 0.030
- Sinopia #BB3E03 ΔE 0.039
- Brick Orange #C14A09 ΔE 0.048
- Faded Red #D3494E ΔE 0.050
- Dark Rose #B5485D ΔE 0.050
- Cherry #CF0234 ΔE 0.051
- Firebrick #B22222 ΔE 0.054
Use #C13C37 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.