#C3644E
Closest named color: Terracotta (#CA6641). oklch(61.1% 0.127 34.2), rgb(195, 100, 78).
Aa
Black text reads best on this color (5.25:1).
About this color
#C3644E is a medium-dark, moderately saturated red. In OKLCH its lightness is 61%, its chroma 0.127 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Terracotta (#CA6641), ΔE 0.021 away. Black text reads best on it, at 5.25:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Terracotta (#CA6641) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #C3644E |
| RGB | rgb(195, 100, 78) |
| HSL | hsl(11, 49%, 54%) |
| OKLCH | oklch(61.1% 0.127 34.2) |
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 #C3644E | 3.99:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #C3644E | 5.25:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #C3644E text on white | 3.99:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #C3644E text on black | 5.25:1 | AA | Lc -34.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FBF4F2
oklch(97.2% 0.008 36.6)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#EFD2CA
oklch(88.6% 0.034 35.9)
-
Step 300
300
#E6B3A6
oklch(81% 0.063 34.7)
-
Step 400
400
#D78A77
oklch(70.8% 0.099 34.6)
-
Step 500
500 (this color)
#C3644E
oklch(61.1% 0.127 34.2)
-
Step 600
600
#B55039
oklch(55.6% 0.137 34.2)
-
Step 700
700
#9C402B
oklch(49.2% 0.128 34.3)
-
Step 800
800
#7E3525
oklch(42.6% 0.105 33.8)
-
Step 900
900
#662F22
oklch(37.7% 0.083 34.5)
-
Step 950
950
#3C1C15
oklch(27% 0.052 33.4)
#C3644E 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) | #7C734C | 0.126 |
| Deuteranopia (no green cones) | #93874C | 0.117 |
| Tritanopia (no blue cones) | #D4535F | 0.055 |
| Achromatopsia (no color) | #7F7F7F | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C3644E
#C3644E
oklch(61.1% 0.127 34.2)
- #0093AB
#0093AB
oklch(61% 0.108 214.6)
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 #C3644E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terracotta #CA6641 ΔE 0.021
- Terra Cotta #C9643B ΔE 0.023
- Terracota #CB6843 ΔE 0.024
- Adobe #BD6C48 ΔE 0.024
- Clay #B66A50 ΔE 0.025
- Indian Red #CD5C5C ΔE 0.034
- Dark Coral #CF524E ΔE 0.041
- Pinkish Brown #B17261 ΔE 0.042
Use #C3644E 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.