#C43F38
Closest named color: Dull Red (#BB3F3F). oklch(55.8% 0.171 27.1), rgb(196, 63, 56).
Aa
White text reads best on this color (5.10:1).
About this color
#C43F38 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.171 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.020 away. White text reads best on it, at 5.10:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #C43F38 |
| RGB | rgb(196, 63, 56) |
| HSL | hsl(3, 56%, 49%) |
| OKLCH | oklch(55.8% 0.171 27.1) |
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 #C43F38 | 5.10:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #C43F38 | 4.11:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #C43F38 text on white | 5.10:1 | AA | Lc 74.1 | Content text, not long reading |
| #C43F38 text on black | 4.11:1 | AA large text | Lc -27.6 | 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
#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
#E38176
oklch(70.7% 0.123 27.3)
-
Step 500
500
#D85D53
oklch(63.1% 0.157 27.1)
-
Step 600
600 (this color)
#C43F38
oklch(55.8% 0.171 27.1)
-
Step 700
700
#A82F2A
oklch(49.1% 0.158 27.1)
-
Step 800
800
#892924
oklch(42.8% 0.131 27.1)
-
Step 900
900
#6E2722
oklch(37.7% 0.102 27.1)
-
Step 950
950
#411814
oklch(27.1% 0.065 27.8)
#C43F38 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) | #645C36 | 0.182 |
| Deuteranopia (no green cones) | #867934 | 0.167 |
| Tritanopia (no blue cones) | #D7173F | 0.054 |
| Achromatopsia (no color) | #6E6E6E | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C43F38
#C43F38
oklch(55.8% 0.171 27.1)
- #008390
#008390
oklch(55.7% 0.096 207)
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 #C43F38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.020
- Dusty Red #B9484E ΔE 0.031
- Sinopia #BB3E03 ΔE 0.041
- Faded Red #D3494E ΔE 0.042
- Brick Orange #C14A09 ΔE 0.044
- Dark Coral #CF524E ΔE 0.046
- Dark Rose #B5485D ΔE 0.052
- Burnt Orange #C04E01 ΔE 0.052
Use #C43F38 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.