#EC6540
Closest named color: Burnt Sienna (#E76F51). oklch(66.9% 0.175 36.2), rgb(236, 101, 64).
Aa
Black text reads best on this color (6.50:1).
About this color
#EC6540 is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.175 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 6.50:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.50:1 |
| White text | 3.22:1 |
Values
| HEX | #EC6540 |
| RGB | rgb(236, 101, 64) |
| HSL | hsl(13, 82%, 59%) |
| OKLCH | oklch(66.9% 0.175 36.2) |
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 #EC6540 | 3.22:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #EC6540 | 6.50:1 | AA | Lc 45.3 | Large or bold text, headings |
| #EC6540 text on white | 3.22:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #EC6540 text on black | 6.50:1 | AA | Lc -42.9 | 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 400.
-
Step 50
50
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DB
oklch(93.6% 0.032 37.1)
-
Step 200
200
#FECCBE
oklch(88.5% 0.06 36.2)
-
Step 300
300
#FEA78F
oklch(80.8% 0.109 36.1)
-
Step 400
400 (this color)
#EC6540
oklch(66.9% 0.175 36.2)
-
Step 500
500
#EE4400
oklch(63.1% 0.215 36.3)
-
Step 600
600
#CA3800
oklch(55.7% 0.19 36.2)
-
Step 700
700
#AA2E00
oklch(49% 0.167 36.3)
-
Step 800
800
#8D2400
oklch(42.7% 0.146 36.1)
-
Step 900
900
#771D00
oklch(37.8% 0.129 36.2)
-
Step 950
950
#490E00
oklch(26.9% 0.092 36.1)
#EC6540 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) | #8A7D3B | 0.176 |
| Deuteranopia (no green cones) | #AB9A3C | 0.161 |
| Tritanopia (no blue cones) | #FF475D | 0.073 |
| Achromatopsia (no color) | #8F8F8F | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC6540
#EC6540
oklch(66.9% 0.175 36.2)
- #00A6C4
#00A6C4
oklch(66.9% 0.119 216.8)
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 #EC6540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.022
- Tomato #FF6347 ΔE 0.036
- Orange Pant #FB5607 ΔE 0.038
- Bright Orange #FF5B00 ΔE 0.042
- Orange Pink #FF6F52 ΔE 0.045
- Grapefruit #FD5956 ΔE 0.046
- Pinkish Orange #FF724C ΔE 0.047
- Blood Orange #FE4B03 ΔE 0.049
Use #EC6540 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.