#E66E43
Closest named color: Burnt Sienna (#E76F51). oklch(67.4% 0.16 39.8), rgb(230, 110, 67).
Aa
Black text reads best on this color (6.67:1).
About this color
#E66E43 is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.160 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.014 away. Black text reads best on it, at 6.67:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.160) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.67:1 |
| White text | 3.14:1 |
Values
| HEX | #E66E43 |
| RGB | rgb(230, 110, 67) |
| HSL | hsl(16, 77%, 58%) |
| OKLCH | oklch(67.4% 0.16 39.8) |
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 #E66E43 | 3.14:1 | AA large text | Lc -63.3 | Content text, not long reading |
| Black text on #E66E43 | 6.67:1 | AA | Lc 46.1 | Large or bold text, headings |
| #E66E43 text on white | 3.14:1 | AA large text | Lc 57.9 | Large or bold text, headings |
| #E66E43 text on black | 6.67:1 | AA | Lc -43.8 | 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
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FCE4DC
oklch(93.6% 0.029 39.3)
-
Step 200
200
#FBCEBE
oklch(88.6% 0.056 40.5)
-
Step 300
300
#F9AB90
oklch(81% 0.1 39.9)
-
Step 400
400 (this color)
#E66E43
oklch(67.4% 0.16 39.8)
-
Step 500
500
#E75000
oklch(63.2% 0.199 39.9)
-
Step 600
600
#C34200
oklch(55.6% 0.175 39.8)
-
Step 700
700
#A53600
oklch(49% 0.155 39.6)
-
Step 800
800
#882B00
oklch(42.6% 0.135 39.6)
-
Step 900
900
#732300
oklch(37.7% 0.119 39.6)
-
Step 950
950
#471300
oklch(27.1% 0.085 40.2)
#E66E43 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) | #8F813E | 0.154 |
| Deuteranopia (no green cones) | #AC9B40 | 0.141 |
| Tritanopia (no blue cones) | #FC5564 | 0.077 |
| Achromatopsia (no color) | #919191 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66E43
#E66E43
oklch(67.4% 0.16 39.8)
- #00A7CA
#00A7CA
oklch(67.4% 0.123 219.9)
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 #E66E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.014
- Dark Peach #DE7E5D ΔE 0.037
- Pumpkin #E17701 ΔE 0.047
- Tomato #FF6347 ΔE 0.048
- Pinkish Orange #FF724C ΔE 0.048
- Chocolate #D2691E ΔE 0.049
- Orange Pink #FF6F52 ΔE 0.049
- Orange Pant #FB5607 ΔE 0.052
Use #E66E43 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.