#CF6539
Closest named color: Terracotta (#CA6641). oklch(62.6% 0.146 42), rgb(207, 101, 57).
Aa
Black text reads best on this color (5.57:1).
About this color
#CF6539 is a medium-light, vivid orange. In OKLCH its lightness is 63%, its chroma 0.146 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Terracotta (#CA6641), ΔE 0.011 away. Black text reads best on it, at 5.57:1.
| Hue family | Oranges |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Terracotta (#CA6641) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #CF6539 |
| RGB | rgb(207, 101, 57) |
| HSL | hsl(18, 61%, 52%) |
| OKLCH | oklch(62.6% 0.146 42) |
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 #CF6539 | 3.76:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #CF6539 | 5.57:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #CF6539 text on white | 3.76:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #CF6539 text on black | 5.57:1 | AA | Lc -37.0 | 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 500.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F1D1C5
oklch(88.4% 0.04 41.7)
-
Step 300
300
#EAB29D
oklch(81% 0.072 41.5)
-
Step 400
400
#DC8766
oklch(70.6% 0.115 41.8)
-
Step 500
500 (this color)
#CF6539
oklch(62.6% 0.146 42)
-
Step 600
600
#BC4A12
oklch(55.5% 0.159 41.8)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#833109
oklch(42.6% 0.122 41.7)
-
Step 900
900
#6A2D12
oklch(37.8% 0.095 42.4)
-
Step 950
950
#3E1B0C
oklch(27% 0.06 42.8)
#CF6539 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) | #827534 | 0.138 |
| Deuteranopia (no green cones) | #9C8C37 | 0.126 |
| Tritanopia (no blue cones) | #E34F5B | 0.074 |
| Achromatopsia (no color) | #838383 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF6539
#CF6539
oklch(62.6% 0.146 42)
- #0097BA
#0097BA
oklch(62.7% 0.116 222)
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 #CF6539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terracotta #CA6641 ΔE 0.011
- Terracota #CB6843 ΔE 0.011
- Terra Cotta #C9643B ΔE 0.012
- Chocolate #D2691E ΔE 0.025
- Rusty Orange #CD5909 ΔE 0.033
- Adobe #BD6C48 ΔE 0.034
- Rust #CA6702 ΔE 0.034
- Browny Orange #CA6B02 ΔE 0.038
Use #CF6539 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.