#C13527
Closest named color: Dull Red (#BB3F3F). oklch(54.1% 0.179 29.7), rgb(193, 53, 39).
Aa
White text reads best on this color (5.51:1).
About this color
#C13527 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.179 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.026 away. White text reads best on it, at 5.51:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #C13527 |
| RGB | rgb(193, 53, 39) |
| HSL | hsl(5, 66%, 45%) |
| OKLCH | oklch(54.1% 0.179 29.7) |
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 #C13527 | 5.51:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #C13527 | 3.80:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #C13527 text on white | 5.51:1 | AA | Lc 76.3 | Fine for body text |
| #C13527 text on black | 3.80:1 | AA large text | Lc -25.5 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#F0AEA2
oklch(81% 0.08 30.5)
-
Step 400
400
#E67F70
oklch(70.7% 0.13 29.4)
-
Step 500
500
#DB5A4A
oklch(63% 0.165 29.6)
-
Step 600
600 (this color)
#C13527
oklch(54.1% 0.179 29.7)
-
Step 700
700
#AB2B1F
oklch(49.1% 0.166 29.7)
-
Step 800
800
#8B261B
oklch(42.7% 0.138 30)
-
Step 900
900
#70251C
oklch(37.7% 0.108 29.8)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#C13527 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) | #5F5524 | 0.190 |
| Deuteranopia (no green cones) | #827421 | 0.173 |
| Tritanopia (no blue cones) | #D50033 | 0.054 |
| Achromatopsia (no color) | #696969 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C13527
#C13527
oklch(54.1% 0.179 29.7)
- #007D8D
#007D8D
oklch(54% 0.094 210.3)
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 #C13527, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.026
- Sinopia #BB3E03 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.043
- Firebrick #B22222 ΔE 0.045
- Dusty Red #B9484E ΔE 0.045
- Brick Orange #C14A09 ΔE 0.045
- Scarlet #BE0119 ΔE 0.046
- Cherry #CF0234 ΔE 0.049
Use #C13527 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.