#EF9901
Closest named color: Gamboge (#EE9B00). oklch(75.2% 0.163 69.9), rgb(239, 153, 1).
Aa
Black text reads best on this color (9.22:1).
About this color
#EF9901 is a medium-light, vivid orange. In OKLCH its lightness is 75%, its chroma 0.163 and its hue 70°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.005 away. Black text reads best on it, at 9.22:1.
| Hue family | Oranges |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 9.22:1 |
| White text | 2.27:1 |
Values
| HEX | #EF9901 |
| RGB | rgb(239, 153, 1) |
| HSL | hsl(38, 99%, 47%) |
| OKLCH | oklch(75.2% 0.163 69.9) |
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 #EF9901 | 2.27:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #EF9901 | 9.22:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #EF9901 text on white | 2.27:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #EF9901 text on black | 9.22:1 | AAA | Lc -57.7 | 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
#FCF4EC
oklch(97.1% 0.014 67.7)
-
Step 100
100
#F7E7D5
oklch(93.6% 0.03 70.7)
-
Step 200
200
#F2D3B1
oklch(88.4% 0.057 69.6)
-
Step 300
300
#EBB576
oklch(80.9% 0.102 69.9)
-
Step 400
400 (this color)
#EF9901
oklch(75.2% 0.163 69.9)
-
Step 500
500
#BD7800
oklch(63.1% 0.137 69.9)
-
Step 600
600
#9F6400
oklch(55.5% 0.12 69.8)
-
Step 700
700
#865400
oklch(49.1% 0.106 70.2)
-
Step 800
800
#6F4400
oklch(42.7% 0.093 69.4)
-
Step 900
900
#5D3800
oklch(37.7% 0.082 69.1)
-
Step 950
950
#382000
oklch(26.9% 0.058 69.5)
#EF9901 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) | #B6A000 | 0.094 |
| Deuteranopia (no green cones) | #CAB40C | 0.085 |
| Tritanopia (no blue cones) | #FF8482 | 0.127 |
| Achromatopsia (no color) | #ACACAC | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF9901
#EF9901
oklch(75.2% 0.163 69.9)
- #69B4FF
#69B4FF
oklch(75.2% 0.132 250)
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 #EF9901, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.005
- Tangerine #FF9408 ΔE 0.029
- Dark Orange #FF8C00 ΔE 0.038
- Orange #FFA500 ΔE 0.041
- Goldenrod #DAA520 ΔE 0.041
- Faded Orange #F0944D ΔE 0.043
- Squash #F2AB15 ΔE 0.043
- Mango #FFA62B ΔE 0.043
Use #EF9901 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.