#E37243
Closest named color: Burnt Sienna (#E76F51). oklch(67.5% 0.154 42.2), rgb(227, 114, 67).
Aa
Black text reads best on this color (6.75:1).
About this color
#E37243 is a medium-light, vivid orange. In OKLCH its lightness is 68%, its chroma 0.154 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.019 away. Black text reads best on it, at 6.75:1.
| Hue family | Oranges |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.75:1 |
| White text | 3.10:1 |
Values
| HEX | #E37243 |
| RGB | rgb(227, 114, 67) |
| HSL | hsl(18, 74%, 58%) |
| OKLCH | oklch(67.5% 0.154 42.2) |
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 #E37243 | 3.10:1 | AA large text | Lc -62.9 | Content text, not long reading |
| Black text on #E37243 | 6.75:1 | AA | Lc 46.5 | Large or bold text, headings |
| #E37243 text on white | 3.10:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #E37243 text on black | 6.75:1 | AA | Lc -44.2 | 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
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FBE4DC
oklch(93.5% 0.028 40.2)
-
Step 200
200
#F9CEBE
oklch(88.4% 0.054 41.4)
-
Step 300
300
#F6AC8F
oklch(80.8% 0.096 42.2)
-
Step 400
400 (this color)
#E37243
oklch(67.5% 0.154 42.2)
-
Step 500
500
#E25600
oklch(63.1% 0.189 42.3)
-
Step 600
600
#BF4700
oklch(55.5% 0.167 42.1)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#702600
oklch(37.6% 0.113 42)
-
Step 950
950
#451500
oklch(27% 0.081 42.7)
#E37243 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) | #91833E | 0.144 |
| Deuteranopia (no green cones) | #AC9C41 | 0.133 |
| Tritanopia (no blue cones) | #F85B68 | 0.079 |
| Achromatopsia (no color) | #929292 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E37243
#E37243
oklch(67.5% 0.154 42.2)
- #00A7CE
#00A7CE
oklch(67.5% 0.125 222.3)
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 #E37243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.019
- Dark Peach #DE7E5D ΔE 0.031
- Pumpkin #E17701 ΔE 0.041
- Chocolate #D2691E ΔE 0.046
- Dusty Orange #F0833A ΔE 0.050
- Dull Orange #D8863B ΔE 0.051
- Pinkish Orange #FF724C ΔE 0.052
- Terracota #CB6843 ΔE 0.052
Use #E37243 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.