#C15536
Closest named color: Rust Orange (#C45508). oklch(58.1% 0.146 36.8), rgb(193, 85, 54).
Aa
Black text reads best on this color (4.62:1).
About this color
#C15536 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.146 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.029 away. Black text reads best on it, at 4.62:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.62:1 |
| White text | 4.54:1 |
Values
| HEX | #C15536 |
| RGB | rgb(193, 85, 54) |
| HSL | hsl(13, 56%, 48%) |
| OKLCH | oklch(58.1% 0.146 36.8) |
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 #C15536 | 4.54:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #C15536 | 4.62:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #C15536 text on white | 4.54:1 | AA | Lc 70.9 | Content text, not long reading |
| #C15536 text on black | 4.62:1 | AA | Lc -30.8 | 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 600.
-
Step 50
50
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#F0D1C8
oklch(88.4% 0.037 36.8)
-
Step 300
300
#E7B2A3
oklch(80.8% 0.066 36.4)
-
Step 400
400
#D98871
oklch(70.6% 0.105 36.6)
-
Step 500
500
#CD684C
oklch(63% 0.135 36.4)
-
Step 600
600 (this color)
#C15536
oklch(58.1% 0.146 36.8)
-
Step 700
700
#9E3D21
oklch(49% 0.136 36.6)
-
Step 800
800
#81331D
oklch(42.7% 0.113 36.5)
-
Step 900
900
#682E1D
oklch(37.7% 0.088 37.1)
-
Step 950
950
#3D1B12
oklch(26.9% 0.056 35.8)
#C15536 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) | #726732 | 0.146 |
| Deuteranopia (no green cones) | #8D7F33 | 0.133 |
| Tritanopia (no blue cones) | #D43E4E | 0.064 |
| Achromatopsia (no color) | #767676 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C15536
#C15536
oklch(58.1% 0.146 36.8)
- #0089A2
#0089A2
oklch(58.1% 0.104 216.6)
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 #C15536, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.029
- Brick Orange #C14A09 ΔE 0.030
- Burnt Orange #C04E01 ΔE 0.031
- Terra Cotta #C9643B ΔE 0.038
- Burnt Siena #B75203 ΔE 0.038
- Rusty Orange #CD5909 ΔE 0.038
- Dark Coral #CF524E ΔE 0.040
- Terracotta #CA6641 ΔE 0.042
Use #C15536 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.