#EF9729
Closest named color: Gamboge (#EE9B00). oklch(75% 0.155 65.8), rgb(239, 151, 41).
Aa
Black text reads best on this color (9.12:1).
About this color
#EF9729 is a medium-light, vivid orange. In OKLCH its lightness is 75%, its chroma 0.155 and its hue 66°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.018 away. Black text reads best on it, at 9.12:1.
| Hue family | Oranges |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 9.12:1 |
| White text | 2.30:1 |
Values
| HEX | #EF9729 |
| RGB | rgb(239, 151, 41) |
| HSL | hsl(33, 86%, 55%) |
| OKLCH | oklch(75% 0.155 65.8) |
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 #EF9729 | 2.30:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #EF9729 | 9.12:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #EF9729 text on white | 2.30:1 | Fails | Lc 45.0 | Large or bold text, headings |
| #EF9729 text on black | 9.12:1 | AAA | Lc -57.1 | 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
#ECB47C
oklch(80.9% 0.097 65.7)
-
Step 400
400 (this color)
#EF9729
oklch(75% 0.155 65.8)
-
Step 500
500
#C27500
oklch(63.2% 0.141 65.8)
-
Step 600
600
#A36200
oklch(55.6% 0.124 66.2)
-
Step 700
700
#8A5200
oklch(49.2% 0.11 66)
-
Step 800
800
#714200
oklch(42.6% 0.095 65.8)
-
Step 900
900
#5F3700
oklch(37.8% 0.084 66.2)
-
Step 950
950
#3A1F00
oklch(27% 0.06 65.1)
#EF9729 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) | #B39F10 | 0.102 |
| Deuteranopia (no green cones) | #C8B32B | 0.090 |
| Tritanopia (no blue cones) | #FF8282 | 0.116 |
| Achromatopsia (no color) | #ABABAB | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF9729
#EF9729
oklch(75% 0.155 65.8)
- #5CB5FF
#5CB5FF
oklch(74.9% 0.137 246.1)
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 #EF9729, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.018
- Tangerine #FF9408 ΔE 0.027
- Faded Orange #F0944D ΔE 0.029
- Dark Orange #FF8C00 ΔE 0.033
- Pastel Orange #FF964F ΔE 0.042
- Earth Yellow #DDA15E ΔE 0.045
- Sandy Brown #F4A460 ΔE 0.046
- Mango #FFA62B ΔE 0.047
Use #EF9729 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.