#E5901B
Closest named color: Gamboge (#EE9B00). oklch(72.5% 0.154 66.9), rgb(229, 144, 27).
Aa
Black text reads best on this color (8.33:1).
About this color
#E5901B is a medium-light, vivid orange. In OKLCH its lightness is 72%, its chroma 0.154 and its hue 67°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.033 away. Black text reads best on it, at 8.33:1.
| Hue family | Oranges |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 8.33:1 |
| White text | 2.51:1 |
Values
| HEX | #E5901B |
| RGB | rgb(229, 144, 27) |
| HSL | hsl(35, 80%, 50%) |
| OKLCH | oklch(72.5% 0.154 66.9) |
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 #E5901B | 2.51:1 | Fails | Lc -54.1 | Large or bold text, headings |
| Black text on #E5901B | 8.33:1 | AAA | Lc 55.0 | Large or bold text, headings |
| #E5901B text on white | 2.51:1 | Fails | Lc 49.0 | Large or bold text, headings |
| #E5901B text on black | 8.33:1 | AAA | Lc -52.9 | 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
#FCF4ED
oklch(97.1% 0.013 63.9)
-
Step 100
100
#F7E7D7
oklch(93.6% 0.028 67.5)
-
Step 200
200
#F2D3B4
oklch(88.5% 0.054 67)
-
Step 300
300
#EBB57C
oklch(81% 0.097 67.3)
-
Step 400
400 (this color)
#E5901B
oklch(72.5% 0.154 66.9)
-
Step 500
500
#C07600
oklch(63.1% 0.139 67.3)
-
Step 600
600
#A26200
oklch(55.5% 0.123 66.7)
-
Step 700
700
#895200
oklch(49.1% 0.109 66.6)
-
Step 800
800
#714300
oklch(42.8% 0.095 66.9)
-
Step 900
900
#5E3700
oklch(37.6% 0.083 67)
-
Step 950
950
#392000
oklch(27% 0.059 68.3)
#E5901B 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) | #AC9700 | 0.097 |
| Deuteranopia (no green cones) | #C0AB1E | 0.086 |
| Tritanopia (no blue cones) | #FB7B7C | 0.121 |
| Achromatopsia (no color) | #A3A3A3 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E5901B
#E5901B
oklch(72.5% 0.154 66.9)
- #49ADFF
#49ADFF
oklch(72.5% 0.151 246.8)
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 #E5901B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.033
- Faded Orange #F0944D ΔE 0.039
- Dull Orange #D8863B ΔE 0.041
- Dusty Orange #F0833A ΔE 0.044
- Dark Orange #FF8C00 ΔE 0.044
- Orange Wheel #F77F00 ΔE 0.045
- Tangerine #FF9408 ΔE 0.047
- Earth Yellow #DDA15E ΔE 0.052
Use #E5901B 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.