#EF9731
Closest named color: Gamboge (#EE9B00). oklch(75% 0.152 64.6), rgb(239, 151, 49).
Aa
Black text reads best on this color (9.14:1).
About this color
#EF9731 is a medium-light, vivid orange. In OKLCH its lightness is 75%, its chroma 0.152 and its hue 65°. Its hue sits on the warm side of the wheel. The nearest named color is Gamboge (#EE9B00), ΔE 0.022 away. Black text reads best on it, at 9.14:1.
| Hue family | Oranges |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Gamboge (#EE9B00) |
| Black text | 9.14:1 |
| White text | 2.29:1 |
Values
| HEX | #EF9731 |
| RGB | rgb(239, 151, 49) |
| HSL | hsl(32, 86%, 56%) |
| OKLCH | oklch(75% 0.152 64.6) |
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 #EF9731 | 2.29:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #EF9731 | 9.14:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #EF9731 text on white | 2.29:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #EF9731 text on black | 9.14:1 | 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
#F2D3B5
oklch(88.5% 0.053 66.1)
-
Step 300
300
#ECB47F
oklch(80.9% 0.095 64.3)
-
Step 400
400 (this color)
#EF9731
oklch(75% 0.152 64.6)
-
Step 500
500
#C37400
oklch(63.1% 0.142 64.7)
-
Step 600
600
#A46100
oklch(55.6% 0.125 64.9)
-
Step 700
700
#8B5100
oklch(49.2% 0.111 64.6)
-
Step 800
800
#724200
oklch(42.7% 0.096 65.1)
-
Step 900
900
#603600
oklch(37.7% 0.085 64.2)
-
Step 950
950
#3A1F00
oklch(27% 0.06 65.1)
#EF9731 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) | #B39F1F | 0.102 |
| Deuteranopia (no green cones) | #C8B333 | 0.090 |
| Tritanopia (no blue cones) | #FF8283 | 0.113 |
| Achromatopsia (no color) | #ABABAB | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF9731
#EF9731
oklch(75% 0.152 64.6)
- #58B6FF
#58B6FF
oklch(75% 0.138 244.7)
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 #EF9731, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gamboge #EE9B00 ΔE 0.022
- Faded Orange #F0944D ΔE 0.025
- Tangerine #FF9408 ΔE 0.028
- Dark Orange #FF8C00 ΔE 0.033
- Pastel Orange #FF964F ΔE 0.038
- Earth Yellow #DDA15E ΔE 0.042
- Sandy Brown #F4A460 ΔE 0.043
- Mango #FFA62B ΔE 0.048
Use #EF9731 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.