#E66541
Closest named color: Burnt Sienna (#E76F51). oklch(66.1% 0.169 36.4), rgb(230, 101, 65).
Aa
Black text reads best on this color (6.30:1).
About this color
#E66541 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.169 and its hue 36°. 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 6.30:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #E66541 |
| RGB | rgb(230, 101, 65) |
| HSL | hsl(13, 77%, 58%) |
| OKLCH | oklch(66.1% 0.169 36.4) |
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 #E66541 | 3.33:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #E66541 | 6.30:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #E66541 text on white | 3.33:1 | AA large text | Lc 60.0 | Content text, not long reading |
| #E66541 text on black | 6.30:1 | 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
#F6CFC4
oklch(88.5% 0.047 36.3)
-
Step 300
300
#F0AE9C
oklch(80.8% 0.082 35.8)
-
Step 400
400
#E68064
oklch(70.6% 0.133 36.2)
-
Step 500
500 (this color)
#E66541
oklch(66.1% 0.169 36.4)
-
Step 600
600
#C73C0B
oklch(55.6% 0.183 36.5)
-
Step 700
700
#AA2E00
oklch(49% 0.167 36.3)
-
Step 800
800
#8B2704
oklch(42.7% 0.141 36.6)
-
Step 900
900
#702610
oklch(37.7% 0.11 36.6)
-
Step 950
950
#42170B
oklch(26.9% 0.07 36.4)
#E66541 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) | #887B3D | 0.168 |
| Deuteranopia (no green cones) | #A8973E | 0.153 |
| Tritanopia (no blue cones) | #FC495D | 0.073 |
| Achromatopsia (no color) | #8D8D8D | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66541
#E66541
oklch(66.1% 0.169 36.4)
- #00A3C0
#00A3C0
oklch(65.9% 0.117 216.4)
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 #E66541, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.022
- Orange Pant #FB5607 ΔE 0.046
- Tomato #FF6347 ΔE 0.046
- Pastel Red #DB5856 ΔE 0.048
- Terracota #CB6843 ΔE 0.049
- Chocolate #D2691E ΔE 0.049
- Pale Red #D9544D ΔE 0.050
- Bright Orange #FF5B00 ΔE 0.051
Use #E66541 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.