#EF7543
Closest named color: Burnt Sienna (#E76F51). oklch(69.7% 0.164 41.8), rgb(239, 117, 67).
Aa
Black text reads best on this color (7.29:1).
About this color
#EF7543 is a medium-light, vivid orange. In OKLCH its lightness is 70%, its chroma 0.164 and its hue 42°. 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 7.29:1.
| Hue family | Oranges |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #EF7543 |
| RGB | rgb(239, 117, 67) |
| HSL | hsl(17, 84%, 60%) |
| OKLCH | oklch(69.7% 0.164 41.8) |
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 #EF7543 | 2.87:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #EF7543 | 7.29:1 | AAA | Lc 49.6 | Large or bold text, headings |
| #EF7543 text on white | 2.87:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #EF7543 text on black | 7.29:1 | AAA | Lc -47.4 | Large or bold text, headings |
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
#FEF3EE
oklch(97.1% 0.014 46.2)
-
Step 100
100
#FCE4DB
oklch(93.6% 0.029 41.7)
-
Step 200
200
#FBCEBC
oklch(88.6% 0.057 42.9)
-
Step 300
300
#F9AB8C
oklch(80.9% 0.102 42.5)
-
Step 400
400 (this color)
#EF7543
oklch(69.7% 0.164 41.8)
-
Step 500
500
#E35500
oklch(63.1% 0.191 41.8)
-
Step 600
600
#C04600
oklch(55.6% 0.169 41.6)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#712600
oklch(37.8% 0.115 41.7)
-
Step 950
950
#451400
oklch(26.9% 0.081 41.8)
#EF7543 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) | #96883D | 0.156 |
| Deuteranopia (no green cones) | #B4A340 | 0.143 |
| Tritanopia (no blue cones) | #FF5C6A | 0.079 |
| Achromatopsia (no color) | #989898 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF7543
#EF7543
oklch(69.7% 0.164 41.8)
- #00AED6
#00AED6
oklch(69.6% 0.129 222)
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 #EF7543, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.027
- Pinkish Orange #FF724C ΔE 0.031
- Dusty Orange #F0833A ΔE 0.035
- Melon #FF7855 ΔE 0.035
- Orange Pink #FF6F52 ΔE 0.036
- Dark Peach #DE7E5D ΔE 0.037
- Coral #FF7F50 ΔE 0.039
- Tomato #FF6347 ΔE 0.043
Use #EF7543 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.