#E66745
Closest named color: Burnt Sienna (#E76F51). oklch(66.4% 0.166 36), rgb(230, 103, 69).
Aa
Black text reads best on this color (6.39:1).
About this color
#E66745 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.166 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.018 away. Black text reads best on it, at 6.39:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #E66745 |
| RGB | rgb(230, 103, 69) |
| HSL | hsl(13, 76%, 59%) |
| OKLCH | oklch(66.4% 0.166 36) |
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 #E66745 | 3.28:1 | AA large text | Lc -65.0 | Content text, not long reading |
| Black text on #E66745 | 6.39:1 | AA | Lc 44.5 | Non-text elements, placeholder text |
| #E66745 text on white | 3.28:1 | AA large text | Lc 59.5 | Large or bold text, headings |
| #E66745 text on black | 6.39:1 | AA | Lc -42.2 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F5CFC5
oklch(88.4% 0.045 35.1)
-
Step 300
300
#F0AF9D
oklch(81% 0.081 36.1)
-
Step 400
400
#E58166
oklch(70.7% 0.13 36)
-
Step 500
500 (this color)
#E66745
oklch(66.4% 0.166 36)
-
Step 600
600
#C63D13
oklch(55.6% 0.18 35.9)
-
Step 700
700
#AB2D01
oklch(49.1% 0.168 35.8)
-
Step 800
800
#8A2809
oklch(42.6% 0.138 36.1)
-
Step 900
900
#6F2712
oklch(37.7% 0.107 36.6)
-
Step 950
950
#42180C
oklch(27.1% 0.069 36.7)
#E66745 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) | #897C41 | 0.165 |
| Deuteranopia (no green cones) | #A89842 | 0.152 |
| Tritanopia (no blue cones) | #FC4C5F | 0.071 |
| Achromatopsia (no color) | #8E8E8E | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66745
#E66745
oklch(66.4% 0.166 36)
- #00A5C1
#00A5C1
oklch(66.5% 0.118 215.5)
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 #E66745, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.018
- Tomato #FF6347 ΔE 0.045
- Dark Peach #DE7E5D ΔE 0.048
- Orange Pant #FB5607 ΔE 0.048
- Pastel Red #DB5856 ΔE 0.049
- Terracota #CB6843 ΔE 0.049
- Chocolate #D2691E ΔE 0.051
- Pale Red #D9544D ΔE 0.052
Use #E66745 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.