#CA5531
Closest named color: Rusty Orange (#CD5909). oklch(59.5% 0.158 37.4), rgb(202, 85, 49).
Aa
Black text reads best on this color (4.85:1).
About this color
#CA5531 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.158 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.027 away. Black text reads best on it, at 4.85:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #CA5531 |
| RGB | rgb(202, 85, 49) |
| HSL | hsl(14, 61%, 49%) |
| OKLCH | oklch(59.5% 0.158 37.4) |
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 #CA5531 | 4.32:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #CA5531 | 4.85:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #CA5531 text on white | 4.32:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #CA5531 text on black | 4.85:1 | AA | Lc -32.5 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F4D0C5
oklch(88.5% 0.043 37.7)
-
Step 300
300
#EDB09D
oklch(80.9% 0.077 38)
-
Step 400
400
#E28467
oklch(70.8% 0.123 37.9)
-
Step 500
500 (this color)
#CA5531
oklch(59.5% 0.158 37.4)
-
Step 600
600
#C24317
oklch(55.6% 0.171 37.5)
-
Step 700
700
#A73306
oklch(49.1% 0.159 37.4)
-
Step 800
800
#882C0C
oklch(42.8% 0.132 37.5)
-
Step 900
900
#6D2914
oklch(37.7% 0.102 37.4)
-
Step 950
950
#40190D
oklch(27% 0.065 37.7)
#CA5531 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) | #75692C | 0.157 |
| Deuteranopia (no green cones) | #92832D | 0.143 |
| Tritanopia (no blue cones) | #DE3A4D | 0.069 |
| Achromatopsia (no color) | #797979 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA5531
#CA5531
oklch(59.5% 0.158 37.4)
- #008DA8
#008DA8
oklch(59.4% 0.106 217.7)
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 #CA5531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.027
- Rust Orange #C45508 ΔE 0.028
- Terra Cotta #C9643B ΔE 0.030
- Terracotta #CA6641 ΔE 0.035
- Burnt Orange #C04E01 ΔE 0.035
- Brick Orange #C14A09 ΔE 0.035
- Dark Coral #CF524E ΔE 0.035
- Deep Orange #DC4D01 ΔE 0.037
Use #CA5531 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.