#E66349
Closest named color: Burnt Sienna (#E76F51). oklch(65.9% 0.169 33), rgb(230, 99, 73).
Aa
Black text reads best on this color (6.24:1).
About this color
#E66349 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.169 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.024 away. Black text reads best on it, at 6.24:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #E66349 |
| RGB | rgb(230, 99, 73) |
| HSL | hsl(10, 76%, 59%) |
| OKLCH | oklch(65.9% 0.169 33) |
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 #E66349 | 3.36:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #E66349 | 6.24:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #E66349 text on white | 3.36:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #E66349 text on black | 6.24:1 | AA | Lc -41.4 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F6CFC6
oklch(88.5% 0.046 33.2)
-
Step 300
300
#F1AE9F
oklch(81% 0.082 33)
-
Step 400
400
#E77F6A
oklch(70.7% 0.133 32.5)
-
Step 500
500 (this color)
#E66349
oklch(65.9% 0.169 33)
-
Step 600
600
#C83A1E
oklch(55.7% 0.183 33)
-
Step 700
700
#AC2A0F
oklch(49.1% 0.17 33)
-
Step 800
800
#8C2511
oklch(42.7% 0.142 32.9)
-
Step 900
900
#702516
oklch(37.6% 0.11 33.2)
-
Step 950
950
#42170E
oklch(27% 0.069 33.5)
#E66349 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) | #867A46 | 0.171 |
| Deuteranopia (no green cones) | #A69746 | 0.158 |
| Tritanopia (no blue cones) | #FC485D | 0.066 |
| Achromatopsia (no color) | #8C8C8C | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66349
#E66349
oklch(65.9% 0.169 33)
- #00A4BC
#00A4BC
oklch(66% 0.115 212.9)
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 #E66349, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.024
- Pastel Red #DB5856 ΔE 0.039
- Pale Red #D9544D ΔE 0.044
- Tomato #FF6347 ΔE 0.046
- Grapefruit #FD5956 ΔE 0.048
- Orange Pant #FB5607 ΔE 0.050
- Terracota #CB6843 ΔE 0.050
- Terracotta #CA6641 ΔE 0.053
Use #E66349 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.