#E66C30
Closest named color: Burnt Sienna (#E76F51). oklch(66.9% 0.168 44), rgb(230, 108, 48).
Aa
Black text reads best on this color (6.55:1).
About this color
#E66C30 is a medium-light, vivid orange. In OKLCH its lightness is 67%, its chroma 0.168 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.029 away. Black text reads best on it, at 6.55:1.
| Hue family | Oranges |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.168) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.55:1 |
| White text | 3.20:1 |
Values
| HEX | #E66C30 |
| RGB | rgb(230, 108, 48) |
| HSL | hsl(20, 78%, 55%) |
| OKLCH | oklch(66.9% 0.168 44) |
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 #E66C30 | 3.20:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #E66C30 | 6.55:1 | AA | Lc 45.5 | Large or bold text, headings |
| #E66C30 text on white | 3.20:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #E66C30 text on black | 6.55:1 | AA | Lc -43.1 | 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
#F8E5DD
oklch(93.5% 0.024 44.3)
-
Step 200
200
#F4D0C1
oklch(88.4% 0.046 43.9)
-
Step 300
300
#EEB096
oklch(80.8% 0.081 43.7)
-
Step 400
400
#E38459
oklch(70.7% 0.131 44.5)
-
Step 500
500 (this color)
#E66C30
oklch(66.9% 0.168 44)
-
Step 600
600
#BC4B00
oklch(55.6% 0.161 44.3)
-
Step 700
700
#9F3E00
oklch(49.1% 0.142 44.2)
-
Step 800
800
#843200
oklch(42.8% 0.124 44.1)
-
Step 900
900
#6E2900
oklch(37.7% 0.109 44.5)
-
Step 950
950
#411905
oklch(27% 0.069 44.7)
#E66C30 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) | #8E7F28 | 0.157 |
| Deuteranopia (no green cones) | #AC9A2D | 0.142 |
| Tritanopia (no blue cones) | #FC5160 | 0.087 |
| Achromatopsia (no color) | #909090 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66C30
#E66C30
oklch(66.9% 0.168 44)
- #00A4CE
#00A4CE
oklch(66.8% 0.126 224.5)
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 #E66C30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.029
- Pumpkin #E17701 ΔE 0.036
- Chocolate #D2691E ΔE 0.041
- Dark Peach #DE7E5D ΔE 0.047
- Orange Pant #FB5607 ΔE 0.048
- Bright Orange #FF5B00 ΔE 0.049
- Tomato #FF6347 ΔE 0.054
- Terracota #CB6843 ΔE 0.054
Use #E66C30 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.