#C66554
Closest named color: Terracotta (#CA6641). oklch(61.7% 0.127 31.3), rgb(198, 101, 84).
Aa
Black text reads best on this color (5.39:1).
About this color
#C66554 is a medium-dark, moderately saturated red. In OKLCH its lightness is 62%, its chroma 0.127 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Terracotta (#CA6641), ΔE 0.024 away. Black text reads best on it, at 5.39:1.
| Hue family | Reds |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Terracotta (#CA6641) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #C66554 |
| RGB | rgb(198, 101, 84) |
| HSL | hsl(9, 50%, 55%) |
| OKLCH | oklch(61.7% 0.127 31.3) |
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 #C66554 | 3.89:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #C66554 | 5.39:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #C66554 text on white | 3.89:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #C66554 text on black | 5.39:1 | AA | Lc -35.7 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#EFD1CB
oklch(88.4% 0.035 31.2)
-
Step 300
300
#E6B2A8
oklch(80.8% 0.063 30.9)
-
Step 400
400
#D7897A
oklch(70.7% 0.099 31.5)
-
Step 500
500 (this color)
#C66554
oklch(61.7% 0.127 31.3)
-
Step 600
600
#B64E3D
oklch(55.5% 0.139 31.3)
-
Step 700
700
#9C3F2F
oklch(49.1% 0.128 31.8)
-
Step 800
800
#7F3428
oklch(42.7% 0.107 31.1)
-
Step 900
900
#662E25
oklch(37.6% 0.083 30.7)
-
Step 950
950
#3C1C16
oklch(27% 0.052 31.8)
#C66554 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) | #7D7452 | 0.129 |
| Deuteranopia (no green cones) | #958952 | 0.119 |
| Tritanopia (no blue cones) | #D85561 | 0.051 |
| Achromatopsia (no color) | #818181 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C66554
#C66554
oklch(61.7% 0.127 31.3)
- #0096AA
#0096AA
oklch(61.7% 0.107 211.2)
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 #C66554, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terracotta #CA6641 ΔE 0.024
- Terracota #CB6843 ΔE 0.025
- Indian Red #CD5C5C ΔE 0.027
- Terra Cotta #C9643B ΔE 0.028
- Adobe #BD6C48 ΔE 0.030
- Clay #B66A50 ΔE 0.031
- Dark Coral #CF524E ΔE 0.039
- Pale Red #D9544D ΔE 0.043
Use #C66554 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.