#EC633E
Closest named color: Burnt Sienna (#E76F51). oklch(66.6% 0.178 36), rgb(236, 99, 62).
Aa
Black text reads best on this color (6.42:1).
About this color
#EC633E is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.178 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.025 away. Black text reads best on it, at 6.42:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.42:1 |
| White text | 3.27:1 |
Values
| HEX | #EC633E |
| RGB | rgb(236, 99, 62) |
| HSL | hsl(13, 82%, 58%) |
| OKLCH | oklch(66.6% 0.178 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 #EC633E | 3.27:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #EC633E | 6.42:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #EC633E text on white | 3.27:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #EC633E text on black | 6.42:1 | AA | Lc -42.5 | 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
#FAE4DE
oklch(93.5% 0.026 35.7)
-
Step 200
200
#F7CFC3
oklch(88.5% 0.048 37.3)
-
Step 300
300
#F3AD9A
oklch(80.9% 0.087 35.8)
-
Step 400
400
#E97E61
oklch(70.6% 0.139 36.1)
-
Step 500
500 (this color)
#EC633E
oklch(66.6% 0.178 36)
-
Step 600
600
#CA3700
oklch(55.6% 0.191 36)
-
Step 700
700
#AB2D00
oklch(49.1% 0.169 35.9)
-
Step 800
800
#8D2400
oklch(42.7% 0.146 36.1)
-
Step 900
900
#72230C
oklch(37.6% 0.116 36.1)
-
Step 950
950
#43160A
oklch(26.9% 0.073 35.8)
#EC633E 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) | #897B39 | 0.178 |
| Deuteranopia (no green cones) | #AA9A3A | 0.165 |
| Tritanopia (no blue cones) | #FF445B | 0.073 |
| Achromatopsia (no color) | #8E8E8E | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC633E
#EC633E
oklch(66.6% 0.178 36)
- #00A5C2
#00A5C2
oklch(66.5% 0.118 216.2)
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 #EC633E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.025
- Orange Pant #FB5607 ΔE 0.037
- Tomato #FF6347 ΔE 0.037
- Bright Orange #FF5B00 ΔE 0.041
- Grapefruit #FD5956 ΔE 0.046
- Blood Orange #FE4B03 ΔE 0.046
- Orange Pink #FF6F52 ΔE 0.047
- Pinkish Orange #FF724C ΔE 0.050
Use #EC633E 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.