#C43543
Closest named color: Dull Red (#BB3F3F). oklch(55% 0.179 20.2), rgb(196, 53, 67).
Aa
White text reads best on this color (5.33:1).
About this color
#C43543 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.179 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.023 away. White text reads best on it, at 5.33:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #C43543 |
| RGB | rgb(196, 53, 67) |
| HSL | hsl(354, 57%, 49%) |
| OKLCH | oklch(55% 0.179 20.2) |
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 #C43543 | 5.33:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #C43543 | 3.93:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #C43543 text on white | 5.33:1 | AA | Lc 75.3 | Fine for body text |
| #C43543 text on black | 3.93:1 | AA large text | Lc -26.4 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECD
oklch(88.5% 0.045 19.7)
-
Step 300
300
#F0ACAB
oklch(80.8% 0.08 19.9)
-
Step 400
400
#E67E7F
oklch(70.8% 0.129 20.2)
-
Step 500
500
#DB585E
oklch(63.1% 0.164 20.4)
-
Step 600
600 (this color)
#C43543
oklch(55% 0.179 20.2)
-
Step 700
700
#AB2836
oklch(49.1% 0.166 20.5)
-
Step 800
800
#8B242D
oklch(42.8% 0.138 20.6)
-
Step 900
900
#702429
oklch(37.8% 0.107 20.1)
-
Step 950
950
#421618
oklch(27% 0.068 20.2)
#C43543 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) | #5D5842 | 0.196 |
| Deuteranopia (no green cones) | #81763F | 0.180 |
| Tritanopia (no blue cones) | #D7003B | 0.045 |
| Achromatopsia (no color) | #6B6B6B | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C43543
#C43543
oklch(55% 0.179 20.2)
- #008187
#008187
oklch(54.9% 0.093 200.5)
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 #C43543, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.023
- Dusty Red #B9484E ΔE 0.033
- Cherry #CF0234 ΔE 0.039
- Ruby #CA0147 ΔE 0.044
- Dark Rose #B5485D ΔE 0.044
- Lipstick #D5174E ΔE 0.044
- Lipstick Red #C0022F ΔE 0.046
- Crimson #DC143C ΔE 0.048
Use #C43543 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.