#EC6535
Closest named color: Burnt Sienna (#E76F51). oklch(66.8% 0.178 39.1), rgb(236, 101, 53).
Aa
Black text reads best on this color (6.47:1).
About this color
#EC6535 is a medium-light, vivid red. In OKLCH its lightness is 67%, 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 0.027 away. Black text reads best on it, at 6.47:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.47:1 |
| White text | 3.24:1 |
Values
| HEX | #EC6535 |
| RGB | rgb(236, 101, 53) |
| HSL | hsl(16, 83%, 57%) |
| OKLCH | oklch(66.8% 0.178 39.1) |
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 #EC6535 | 3.24:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #EC6535 | 6.47:1 | AA | Lc 45.2 | Large or bold text, headings |
| #EC6535 text on white | 3.24:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #EC6535 text on black | 6.47:1 | AA | Lc -42.8 | 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)
#EC6535
oklch(66.8% 0.178 39.1)
-
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
#722404
oklch(37.7% 0.117 39.1)
-
Step 950
950
#431707
oklch(27.1% 0.073 39.5)
#EC6535 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) | #8B7C2F | 0.175 |
| Deuteranopia (no green cones) | #AC9A31 | 0.159 |
| Tritanopia (no blue cones) | #FF465B | 0.079 |
| Achromatopsia (no color) | #8F8F8F | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC6535
#EC6535
oklch(66.8% 0.178 39.1)
- #00A5C7
#00A5C7
oklch(66.7% 0.121 219.5)
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 #EC6535, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.027
- Orange Pant #FB5607 ΔE 0.034
- Bright Orange #FF5B00 ΔE 0.038
- Tomato #FF6347 ΔE 0.040
- Blood Orange #FE4B03 ΔE 0.047
- Orange Pink #FF6F52 ΔE 0.049
- Pinkish Orange #FF724C ΔE 0.049
- Chocolate #D2691E ΔE 0.052
Use #EC6535 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.