#C15B04
Closest named color: Rust Orange (#C45508). oklch(58.7% 0.153 50.4), rgb(193, 91, 4).
Aa
Black text reads best on this color (4.76:1).
About this color
#C15B04 is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.153 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.014 away. Black text reads best on it, at 4.76:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.76:1 |
| White text | 4.40:1 |
Values
| HEX | #C15B04 |
| RGB | rgb(193, 91, 4) |
| HSL | hsl(28, 96%, 39%) |
| OKLCH | oklch(58.7% 0.153 50.4) |
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 #C15B04 | 4.40:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #C15B04 | 4.76:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #C15B04 text on white | 4.40:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #C15B04 text on black | 4.76:1 | AA | Lc -31.8 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F6E6DE
oklch(93.6% 0.021 48.5)
-
Step 200
200
#EFD3C3
oklch(88.6% 0.038 51.7)
-
Step 300
300
#E6B499
oklch(80.8% 0.069 49.7)
-
Step 400
400
#D78C5F
oklch(70.7% 0.11 51.1)
-
Step 500
500
#CB6C2E
oklch(63.1% 0.141 50.3)
-
Step 600
600 (this color)
#C15B04
oklch(58.7% 0.153 50.4)
-
Step 700
700
#984600
oklch(49.2% 0.129 50.6)
-
Step 800
800
#7D3800
oklch(42.6% 0.112 50.3)
-
Step 900
900
#673009
oklch(37.7% 0.092 50.1)
-
Step 950
950
#3C1D09
oklch(27% 0.057 50.7)
#C15B04 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) | #796A00 | 0.133 |
| Deuteranopia (no green cones) | #928100 | 0.120 |
| Tritanopia (no blue cones) | #D4434E | 0.090 |
| Achromatopsia (no color) | #787878 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C15B04
#C15B04
oklch(58.7% 0.153 50.4)
- #0088B5
#0088B5
oklch(58.7% 0.118 230.6)
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 #C15B04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.014
- Orange Brown #BE6400 ΔE 0.021
- Rusty Orange #CD5909 ΔE 0.023
- Copper #B66325 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.027
- Burnt Siena #B75203 ΔE 0.029
- Orangey Brown #B16002 ΔE 0.031
- Umber #B26400 ΔE 0.033
Use #C15B04 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.