#E66545
Closest named color: Burnt Sienna (#E76F51). oklch(66.1% 0.168 35.1), rgb(230, 101, 69).
Aa
Black text reads best on this color (6.31:1).
About this color
#E66545 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.168 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.021 away. Black text reads best on it, at 6.31:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.168) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.31:1 |
| White text | 3.32:1 |
Values
| HEX | #E66545 |
| RGB | rgb(230, 101, 69) |
| HSL | hsl(12, 76%, 59%) |
| OKLCH | oklch(66.1% 0.168 35.1) |
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 #E66545 | 3.32:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #E66545 | 6.31:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #E66545 text on white | 3.32:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #E66545 text on black | 6.31:1 | AA | Lc -41.7 | 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
#F0AE9D
oklch(80.8% 0.082 35)
-
Step 400
400
#E68067
oklch(70.7% 0.132 34.8)
-
Step 500
500 (this color)
#E66545
oklch(66.1% 0.168 35.1)
-
Step 600
600
#C73B15
oklch(55.6% 0.183 34.9)
-
Step 700
700
#AB2C03
oklch(49% 0.169 35.3)
-
Step 800
800
#8B270B
oklch(42.7% 0.14 35.2)
-
Step 900
900
#702613
oklch(37.7% 0.109 35.3)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#E66545 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) | #887B41 | 0.168 |
| Deuteranopia (no green cones) | #A89842 | 0.155 |
| Tritanopia (no blue cones) | #FC4A5E | 0.070 |
| Achromatopsia (no color) | #8D8D8D | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66545
#E66545
oklch(66.1% 0.168 35.1)
- #00A4BF
#00A4BF
oklch(66.1% 0.117 214.9)
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 #E66545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.021
- Pastel Red #DB5856 ΔE 0.045
- Tomato #FF6347 ΔE 0.046
- Orange Pant #FB5607 ΔE 0.048
- Pale Red #D9544D ΔE 0.049
- Terracota #CB6843 ΔE 0.049
- Grapefruit #FD5956 ΔE 0.051
- Dark Peach #DE7E5D ΔE 0.051
Use #E66545 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.