#C7540C
Closest named color: Rust Orange (#C45508). oklch(58.6% 0.163 45), rgb(199, 84, 12).
Aa
Black text reads best on this color (4.70:1).
About this color
#C7540C is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.163 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.006 away. Black text reads best on it, at 4.70:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #C7540C |
| RGB | rgb(199, 84, 12) |
| HSL | hsl(23, 89%, 41%) |
| OKLCH | oklch(58.6% 0.163 45) |
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 #C7540C | 4.46:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #C7540C | 4.70:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #C7540C text on white | 4.46:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #C7540C text on black | 4.70:1 | AA | Lc -31.5 | 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 600.
-
Step 50
50
#FCF4F0
oklch(97.2% 0.01 48.6)
-
Step 100
100
#F7E6DE
oklch(93.6% 0.022 47)
-
Step 200
200
#F1D1C3
oklch(88.4% 0.041 45)
-
Step 300
300
#EAB29A
oklch(80.9% 0.074 44.3)
-
Step 400
400
#DD8861
oklch(70.8% 0.117 45)
-
Step 500
500
#D16731
oklch(63.1% 0.15 45.2)
-
Step 600
600 (this color)
#C7540C
oklch(58.6% 0.163 45)
-
Step 700
700
#9E3F00
oklch(49.1% 0.14 44.9)
-
Step 800
800
#833300
oklch(42.8% 0.122 45)
-
Step 900
900
#6A2D0B
oklch(37.7% 0.098 45.4)
-
Step 950
950
#3E1B09
oklch(26.9% 0.062 45.7)
#C7540C 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) | #766700 | 0.152 |
| Deuteranopia (no green cones) | #918102 | 0.139 |
| Tritanopia (no blue cones) | #DB3748 | 0.085 |
| Achromatopsia (no color) | #777777 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C7540C
#C7540C
oklch(58.6% 0.163 45)
- #0089AD
#0089AD
oklch(58.6% 0.111 224.7)
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 #C7540C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.006
- Rusty Orange #CD5909 ΔE 0.017
- Burnt Orange #C04E01 ΔE 0.020
- Brick Orange #C14A09 ΔE 0.025
- Burnt Siena #B75203 ΔE 0.032
- Orange Brown #BE6400 ΔE 0.038
- Terra Cotta #C9643B ΔE 0.039
- Deep Orange #DC4D01 ΔE 0.039
Use #C7540C 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.