#E66F3B
Closest named color: Burnt Sienna (#E76F51). oklch(67.4% 0.162 42.6), rgb(230, 111, 59).
Aa
Black text reads best on this color (6.70:1).
About this color
#E66F3B is a medium-light, vivid orange. In OKLCH its lightness is 67%, its chroma 0.162 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.022 away. Black text reads best on it, at 6.70:1.
| Hue family | Oranges |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.70:1 |
| White text | 3.13:1 |
Values
| HEX | #E66F3B |
| RGB | rgb(230, 111, 59) |
| HSL | hsl(18, 77%, 57%) |
| OKLCH | oklch(67.4% 0.162 42.6) |
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 #E66F3B | 3.13:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #E66F3B | 6.70:1 | AA | Lc 46.3 | Large or bold text, headings |
| #E66F3B text on white | 3.13:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #E66F3B text on black | 6.70:1 | AA | Lc -44.0 | 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 400.
-
Step 50
50
#FEF3EE
oklch(97.1% 0.014 46.2)
-
Step 100
100
#FCE4DB
oklch(93.6% 0.029 41.7)
-
Step 200
200
#FBCEBC
oklch(88.6% 0.057 42.9)
-
Step 300
300
#F9AB8C
oklch(80.9% 0.102 42.5)
-
Step 400
400 (this color)
#E66F3B
oklch(67.4% 0.162 42.6)
-
Step 500
500
#E25700
oklch(63.2% 0.188 42.6)
-
Step 600
600
#BF4800
oklch(55.7% 0.166 42.5)
-
Step 700
700
#A13C00
oklch(49.1% 0.146 42.8)
-
Step 800
800
#853000
oklch(42.7% 0.127 42.7)
-
Step 900
900
#702700
oklch(37.7% 0.113 42.6)
-
Step 950
950
#451500
oklch(27% 0.081 42.7)
#E66F3B 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) | #908135 | 0.152 |
| Deuteranopia (no green cones) | #AD9C38 | 0.140 |
| Tritanopia (no blue cones) | #FC5664 | 0.082 |
| Achromatopsia (no color) | #919191 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66F3B
#E66F3B
oklch(67.4% 0.162 42.6)
- #00A7CE
#00A7CE
oklch(67.5% 0.125 222.3)
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 #E66F3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.022
- Dark Peach #DE7E5D ΔE 0.039
- Pumpkin #E17701 ΔE 0.039
- Chocolate #D2691E ΔE 0.046
- Pinkish Orange #FF724C ΔE 0.050
- Dusty Orange #F0833A ΔE 0.051
- Tomato #FF6347 ΔE 0.051
- Orange Pink #FF6F52 ΔE 0.052
Use #E66F3B 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.