#E66030
Closest named color: Burnt Sienna (#E76F51). oklch(65.2% 0.178 39), rgb(230, 96, 48).
Aa
Black text reads best on this color (6.08:1).
About this color
#E66030 is a medium-light, vivid red. In OKLCH its lightness is 65%, its chroma 0.178 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.036 away. Black text reads best on it, at 6.08:1.
| Hue family | Reds |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.08:1 |
| White text | 3.45:1 |
Values
| HEX | #E66030 |
| RGB | rgb(230, 96, 48) |
| HSL | hsl(16, 78%, 55%) |
| OKLCH | oklch(65.2% 0.178 39) |
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 #E66030 | 3.45:1 | AA large text | Lc -66.7 | Content text, not long reading |
| Black text on #E66030 | 6.08:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #E66030 text on white | 3.45:1 | AA large text | Lc 61.3 | Content text, not long reading |
| #E66030 text on black | 6.08:1 | AA | Lc -40.4 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE5DE
oklch(93.7% 0.025 39.4)
-
Step 200
200
#F7CFC2
oklch(88.5% 0.049 38.8)
-
Step 300
300
#F2AE97
oklch(80.9% 0.087 39.5)
-
Step 400
400
#E97F5C
oklch(70.7% 0.14 38.9)
-
Step 500
500 (this color)
#E66030
oklch(65.2% 0.178 39)
-
Step 600
600
#C44000
oklch(55.5% 0.178 39)
-
Step 700
700
#A63500
oklch(49.1% 0.157 39.1)
-
Step 800
800
#892A00
oklch(42.6% 0.137 39)
-
Step 900
900
#722405
oklch(37.7% 0.116 38.8)
-
Step 950
950
#431707
oklch(27.1% 0.073 39.5)
#E66030 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) | #867729 | 0.174 |
| Deuteranopia (no green cones) | #A7952B | 0.159 |
| Tritanopia (no blue cones) | #FD4056 | 0.081 |
| Achromatopsia (no color) | #8A8A8A | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E66030
#E66030
oklch(65.2% 0.178 39)
- #00A0C0
#00A0C0
oklch(65.2% 0.118 218.8)
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 #E66030, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.036
- Orange Pant #FB5607 ΔE 0.040
- Chocolate #D2691E ΔE 0.043
- Deep Orange #DC4D01 ΔE 0.044
- Bright Orange #FF5B00 ΔE 0.047
- Blood Orange #FE4B03 ΔE 0.049
- Terracota #CB6843 ΔE 0.049
- Terracotta #CA6641 ΔE 0.051
Use #E66030 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.