#E3734B
Closest named color: Burnt Sienna (#E76F51). oklch(67.8% 0.15 39.9), rgb(227, 115, 75).
Aa
Black text reads best on this color (6.82:1).
About this color
#E3734B is a medium-light, vivid red. In OKLCH its lightness is 68%, its chroma 0.150 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.014 away. Black text reads best on it, at 6.82:1.
| Hue family | Reds |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.82:1 |
| White text | 3.07:1 |
Values
| HEX | #E3734B |
| RGB | rgb(227, 115, 75) |
| HSL | hsl(16, 73%, 59%) |
| OKLCH | oklch(67.8% 0.15 39.9) |
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 #E3734B | 3.07:1 | AA large text | Lc -62.6 | Content text, not long reading |
| Black text on #E3734B | 6.82:1 | AA | Lc 46.9 | Large or bold text, headings |
| #E3734B text on white | 3.07:1 | AA large text | Lc 57.2 | Large or bold text, headings |
| #E3734B text on black | 6.82:1 | AA | Lc -44.6 | 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
#FDF3EF
oklch(97.1% 0.012 43.3)
-
Step 100
100
#FBE4DD
oklch(93.6% 0.027 37.6)
-
Step 200
200
#F9CEC0
oklch(88.5% 0.053 38.8)
-
Step 300
300
#F6AC93
oklch(80.9% 0.094 39.4)
-
Step 400
400 (this color)
#E3734B
oklch(67.8% 0.15 39.9)
-
Step 500
500
#E45312
oklch(63.1% 0.192 39.7)
-
Step 600
600
#C34200
oklch(55.6% 0.175 39.8)
-
Step 700
700
#A53700
oklch(49.2% 0.154 40)
-
Step 800
800
#882C00
oklch(42.7% 0.134 40.1)
-
Step 900
900
#722300
oklch(37.6% 0.118 39.8)
-
Step 950
950
#451503
oklch(27.1% 0.079 40.1)
#E3734B 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) | #918447 | 0.143 |
| Deuteranopia (no green cones) | #AC9C49 | 0.131 |
| Tritanopia (no blue cones) | #F85D6A | 0.074 |
| Achromatopsia (no color) | #939393 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3734B
#E3734B
oklch(67.8% 0.15 39.9)
- #00A8CC
#00A8CC
oklch(67.7% 0.124 220.4)
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 #E3734B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.014
- Dark Peach #DE7E5D ΔE 0.026
- Pumpkin #E17701 ΔE 0.047
- Pinkish Orange #FF724C ΔE 0.050
- Dusty Orange #F0833A ΔE 0.051
- Orange Pink #FF6F52 ΔE 0.051
- Chocolate #D2691E ΔE 0.052
- Terracota #CB6843 ΔE 0.053
Use #E3734B 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.