#C52F18
Closest named color: Sinopia (#BB3E03). oklch(54.1% 0.19 31.6), rgb(197, 47, 24).
Aa
White text reads best on this color (5.53:1).
About this color
#C52F18 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.190 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.031 away. White text reads best on it, at 5.53:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.190) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #C52F18 |
| RGB | rgb(197, 47, 24) |
| HSL | hsl(8, 78%, 43%) |
| OKLCH | oklch(54.1% 0.19 31.6) |
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 #C52F18 | 5.53:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #C52F18 | 3.79:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #C52F18 text on white | 5.53:1 | AA | Lc 76.1 | Fine for body text |
| #C52F18 text on black | 3.79:1 | AA large text | Lc -25.6 | 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
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F7CEC6
oklch(88.4% 0.048 30.9)
-
Step 300
300
#F3AD9F
oklch(81% 0.085 31.6)
-
Step 400
400
#E97D6A
oklch(70.6% 0.137 31.2)
-
Step 500
500
#DF5741
oklch(63.1% 0.174 31.5)
-
Step 600
600 (this color)
#C52F18
oklch(54.1% 0.19 31.6)
-
Step 700
700
#AE250F
oklch(49% 0.176 31.7)
-
Step 800
800
#8E2211
oklch(42.8% 0.146 31.8)
-
Step 900
900
#722316
oklch(37.7% 0.114 31.9)
-
Step 950
950
#43160E
oklch(27% 0.072 32.1)
#C52F18 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) | #5E5312 | 0.202 |
| Deuteranopia (no green cones) | #83740B | 0.182 |
| Tritanopia (no blue cones) | #D9002C | 0.050 |
| Achromatopsia (no color) | #686868 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C52F18
#C52F18
oklch(54.1% 0.19 31.6)
- #007D8E
#007D8E
oklch(54.1% 0.094 211.3)
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 #C52F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.031
- Dull Red #BB3F3F ΔE 0.038
- Scarlet #BE0119 ΔE 0.044
- Rusty Red #AF2F0D ΔE 0.046
- Brick Orange #C14A09 ΔE 0.046
- Firebrick #B22222 ΔE 0.048
- Cherry #CF0234 ΔE 0.048
- Lipstick Red #C0022F ΔE 0.050
Use #C52F18 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.