#CF500A
Closest named color: Rusty Orange (#CD5909). oklch(59.3% 0.175 42.2), rgb(207, 80, 10).
Aa
Black text reads best on this color (4.80:1).
About this color
#CF500A is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.175 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.018 away. Black text reads best on it, at 4.80:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.80:1 |
| White text | 4.37:1 |
Values
| HEX | #CF500A |
| RGB | rgb(207, 80, 10) |
| HSL | hsl(21, 91%, 43%) |
| OKLCH | oklch(59.3% 0.175 42.2) |
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 #CF500A | 4.37:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #CF500A | 4.80:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #CF500A text on white | 4.37:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #CF500A text on black | 4.80:1 | AA | Lc -32.3 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E5DE
oklch(93.5% 0.023 41.4)
-
Step 200
200
#F3D0C3
oklch(88.4% 0.043 41.4)
-
Step 300
300
#EDB099
oklch(80.8% 0.079 41.6)
-
Step 400
400
#E2845F
oklch(70.7% 0.127 41.9)
-
Step 500
500
#D7622E
oklch(63.2% 0.161 42.4)
-
Step 600
600 (this color)
#CF500A
oklch(59.3% 0.175 42.2)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#6D2A09
oklch(37.7% 0.104 42.6)
-
Step 950
950
#401909
oklch(26.9% 0.066 41.6)
#CF500A 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) | #756700 | 0.169 |
| Deuteranopia (no green cones) | #948400 | 0.154 |
| Tritanopia (no blue cones) | #E42D45 | 0.084 |
| Achromatopsia (no color) | #797979 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF500A
#CF500A
oklch(59.3% 0.175 42.2)
- #008CAD
#008CAD
oklch(59.3% 0.11 222.2)
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 #CF500A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.018
- Rust Orange #C45508 ΔE 0.022
- Deep Orange #DC4D01 ΔE 0.024
- Burnt Orange #C04E01 ΔE 0.030
- Brick Orange #C14A09 ΔE 0.032
- Terra Cotta #C9643B ΔE 0.042
- Burnt Siena #B75203 ΔE 0.046
- Terracotta #CA6641 ΔE 0.047
Use #CF500A 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.