#E3901B
Closest named color: Gamboge (#EE9B00). oklch(72.2% 0.152 67.7), rgb(227, 144, 27).
Aa
Black text reads best on this color (8.27:1).
About this color
#E3901B is a medium-light, vivid orange. In OKLCH its lightness is 72%, its chroma 0.152 and its hue 68°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.035 away. Black text reads best on it, at 8.27:1.
| Hue family | Oranges |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 8.27:1 |
| White text | 2.53:1 |
Values
| HEX | #E3901B |
| RGB | rgb(227, 144, 27) |
| HSL | hsl(35, 79%, 50%) |
| OKLCH | oklch(72.2% 0.152 67.7) |
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 #E3901B | 2.53:1 | Fails | Lc -54.5 | Large or bold text, headings |
| Black text on #E3901B | 8.27:1 | AAA | Lc 54.6 | Large or bold text, headings |
| #E3901B text on white | 2.53:1 | Fails | Lc 49.4 | Large or bold text, headings |
| #E3901B text on black | 8.27:1 | AAA | Lc -52.6 | 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
#FBF4ED
oklch(97.1% 0.012 67.7)
-
Step 100
100
#F7E7D7
oklch(93.6% 0.028 67.5)
-
Step 200
200
#F1D3B5
oklch(88.4% 0.052 67.1)
-
Step 300
300
#EAB57D
oklch(80.9% 0.095 67.4)
-
Step 400
400 (this color)
#E3901B
oklch(72.2% 0.152 67.7)
-
Step 500
500
#C07600
oklch(63.1% 0.139 67.3)
-
Step 600
600
#A16300
oklch(55.5% 0.122 67.9)
-
Step 700
700
#885300
oklch(49.1% 0.108 68.1)
-
Step 800
800
#704300
oklch(42.6% 0.094 67.6)
-
Step 900
900
#5E3700
oklch(37.6% 0.083 67)
-
Step 950
950
#392000
oklch(27% 0.059 68.3)
#E3901B 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) | #AB9700 | 0.095 |
| Deuteranopia (no green cones) | #BFAA1F | 0.084 |
| Tritanopia (no blue cones) | #F87C7B | 0.118 |
| Achromatopsia (no color) | #A2A2A2 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E3901B
#E3901B
oklch(72.2% 0.152 67.7)
- #4AACFF
#4AACFF
oklch(72.3% 0.152 247.5)
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 #E3901B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.035
- Dull Orange #D8863B ΔE 0.040
- Faded Orange #F0944D ΔE 0.042
- Dusty Orange #F0833A ΔE 0.045
- Orange Wheel #F77F00 ΔE 0.047
- Dark Orange #FF8C00 ΔE 0.047
- Tangerine #FF9408 ΔE 0.050
- Yellow Ochre #CB9D06 ΔE 0.051
Use #E3901B 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.