#EF9F3F
Closest named color: Gamboge (#EE9B00). oklch(76.6% 0.144 67.1), rgb(239, 159, 63).
Aa
Black text reads best on this color (9.70:1).
About this color
#EF9F3F is a medium-light, vivid orange. In OKLCH its lightness is 77%, its chroma 0.144 and its hue 67°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.024 away. Black text reads best on it, at 9.70:1.
| Hue family | Oranges |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 9.70:1 |
| White text | 2.16:1 |
Values
| HEX | #EF9F3F |
| RGB | rgb(239, 159, 63) |
| HSL | hsl(33, 85%, 59%) |
| OKLCH | oklch(76.6% 0.144 67.1) |
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 #EF9F3F | 2.16:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #EF9F3F | 9.70:1 | AAA | Lc 61.7 | Content text, not long reading |
| #EF9F3F text on white | 2.16:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #EF9F3F text on black | 9.70:1 | AAA | Lc -59.9 | 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 300.
-
Step 50
50
#FFF3E8
oklch(97.1% 0.02 65.1)
-
Step 100
100
#FDE5CD
oklch(93.5% 0.041 67.3)
-
Step 200
200
#FDD0A1
oklch(88.5% 0.079 67.7)
-
Step 300
300 (this color)
#EF9F3F
oklch(76.6% 0.144 67.1)
-
Step 400
400
#E08A00
oklch(70.7% 0.156 67)
-
Step 500
500
#C07600
oklch(63.1% 0.139 67.3)
-
Step 600
600
#A26300
oklch(55.7% 0.123 67.4)
-
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)
#EF9F3F 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) | #B9A532 | 0.090 |
| Deuteranopia (no green cones) | #CCB841 | 0.080 |
| Tritanopia (no blue cones) | #FF8C8B | 0.110 |
| Achromatopsia (no color) | #B0B0B0 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF9F3F
#EF9F3F
oklch(76.6% 0.144 67.1)
- #6BBAFF
#6BBAFF
oklch(76.6% 0.127 246.7)
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 #EF9F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.024
- Sandy Brown #F4A460 ΔE 0.030
- Faded Orange #F0944D ΔE 0.032
- Tangerine #FF9408 ΔE 0.034
- Mango #FFA62B ΔE 0.035
- Earth Yellow #DDA15E ΔE 0.036
- Light Orange #FDAA48 ΔE 0.037
- Pale Orange #FFA756 ΔE 0.038
Use #EF9F3F 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.