#C43751
Closest named color: Dull Red (#BB3F3F). oklch(55.4% 0.177 14.7), rgb(196, 55, 81).
Aa
White text reads best on this color (5.23:1).
About this color
#C43751 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.177 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.034 away. White text reads best on it, at 5.23:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #C43751 |
| RGB | rgb(196, 55, 81) |
| HSL | hsl(349, 56%, 49%) |
| OKLCH | oklch(55.4% 0.177 14.7) |
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 #C43751 | 5.23:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #C43751 | 4.01:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #C43751 text on white | 5.23:1 | AA | Lc 74.8 | Content text, not long reading |
| #C43751 text on black | 4.01:1 | AA large text | Lc -26.9 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E5
oklch(93.6% 0.023 14.3)
-
Step 200
200
#F5CED0
oklch(88.5% 0.044 14.5)
-
Step 300
300
#EFACB0
oklch(80.9% 0.079 15)
-
Step 400
400
#E47D87
oklch(70.6% 0.127 14.7)
-
Step 500
500
#D9586A
oklch(63.1% 0.162 14.6)
-
Step 600
600 (this color)
#C43751
oklch(55.4% 0.177 14.7)
-
Step 700
700
#A92842
oklch(49% 0.164 14.7)
-
Step 800
800
#8A2437
oklch(42.8% 0.136 14.6)
-
Step 900
900
#6F242F
oklch(37.8% 0.106 15.1)
-
Step 950
950
#41161C
oklch(27% 0.067 14.3)
#C43751 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) | #5C5A51 | 0.196 |
| Deuteranopia (no green cones) | #80774D | 0.180 |
| Tritanopia (no blue cones) | #D60E42 | 0.043 |
| Achromatopsia (no color) | #6C6C6C | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C43751
#C43751
oklch(55.4% 0.177 14.7)
- #008484
#008484
oklch(55.5% 0.095 194.8)
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 #C43751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.034
- Dusty Red #B9484E ΔE 0.034
- Deep Rose #C74767 ΔE 0.035
- Dark Rose #B5485D ΔE 0.036
- Dark Pink #CB416B ΔE 0.039
- Lipstick #D5174E ΔE 0.039
- Ruby #CA0147 ΔE 0.042
- Cherry #CF0234 ΔE 0.046
Use #C43751 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.