#C15525
Closest named color: Rust Orange (#C45508). oklch(58% 0.151 42.1), rgb(193, 85, 37).
Aa
Black text reads best on this color (4.59:1).
About this color
#C15525 is a medium-dark, vivid orange. In OKLCH its lightness is 58%, its chroma 0.151 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.015 away. Black text reads best on it, at 4.59:1.
| Hue family | Oranges |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.59:1 |
| White text | 4.57:1 |
Values
| HEX | #C15525 |
| RGB | rgb(193, 85, 37) |
| HSL | hsl(18, 68%, 45%) |
| OKLCH | oklch(58% 0.151 42.1) |
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 #C15525 | 4.57:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #C15525 | 4.59:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #C15525 text on white | 4.57:1 | AA | Lc 71.1 | Content text, not long reading |
| #C15525 text on black | 4.59:1 | AA | Lc -30.6 | 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
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#F0D2C6
oklch(88.6% 0.038 43.1)
-
Step 300
300
#E8B39E
oklch(81% 0.069 42.6)
-
Step 400
400
#DA8969
oklch(70.7% 0.109 42.2)
-
Step 500
500
#CE6940
oklch(63.2% 0.139 41.9)
-
Step 600
600 (this color)
#C15525
oklch(58% 0.151 42.1)
-
Step 700
700
#9F3E0D
oklch(49.1% 0.14 42.2)
-
Step 800
800
#813410
oklch(42.7% 0.116 42.3)
-
Step 900
900
#682E16
oklch(37.6% 0.091 41.8)
-
Step 950
950
#3D1C0E
oklch(27% 0.057 42.9)
#C15525 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) | #73671E | 0.145 |
| Deuteranopia (no green cones) | #8E7F21 | 0.132 |
| Tritanopia (no blue cones) | #D43C4B | 0.075 |
| Achromatopsia (no color) | #767676 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C15525
#C15525
oklch(58% 0.151 42.1)
- #0088A8
#0088A8
oklch(58.1% 0.107 222.1)
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 #C15525, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.015
- Burnt Orange #C04E01 ΔE 0.019
- Brick Orange #C14A09 ΔE 0.022
- Burnt Siena #B75203 ΔE 0.027
- Rusty Orange #CD5909 ΔE 0.029
- Copper #B66325 ΔE 0.035
- Terra Cotta #C9643B ΔE 0.038
- Orange Brown #BE6400 ΔE 0.042
Use #C15525 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.