#EFAA37
Closest named color: Squash (#F2AB15). oklch(78.5% 0.147 75.5), rgb(239, 170, 55).
Aa
Black text reads best on this color (10.47:1).
About this color
#EFAA37 is a light, vivid orange. In OKLCH its lightness is 79%, its chroma 0.147 and its hue 75°. Its hue sits on the warm side of the wheel. The nearest named color is Squash (#F2AB15), ΔE 0.016 away. Black text reads best on it, at 10.47:1.
| Hue family | Oranges |
| Lightness | light (79%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Squash (#F2AB15) |
| Black text | 10.47:1 |
| White text | 2.00:1 |
Values
| HEX | #EFAA37 |
| RGB | rgb(239, 170, 55) |
| HSL | hsl(37, 85%, 58%) |
| OKLCH | oklch(78.5% 0.147 75.5) |
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 #EFAA37 | 2.00:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #EFAA37 | 10.47:1 | AAA | Lc 65.3 | Content text, not long reading |
| #EFAA37 text on white | 2.00:1 | Fails | Lc 38.6 | Non-text elements, placeholder text |
| #EFAA37 text on black | 10.47:1 | AAA | Lc -63.8 | Content text, not long reading |
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
#FDF4E7
oklch(97.1% 0.02 77.3)
-
Step 100
100
#FBE7CB
oklch(93.7% 0.043 76.4)
-
Step 200
200
#F9D29C
oklch(88.5% 0.082 75.4)
-
Step 300
300 (this color)
#EFAA37
oklch(78.5% 0.147 75.5)
-
Step 400
400
#D59100
oklch(70.7% 0.149 75.6)
-
Step 500
500
#B77C00
oklch(63.1% 0.133 75.6)
-
Step 600
600
#9A6800
oklch(55.6% 0.117 75.8)
-
Step 700
700
#825700
oklch(49.1% 0.103 75.7)
-
Step 800
800
#6B4700
oklch(42.8% 0.09 75.9)
-
Step 900
900
#5A3A00
oklch(37.7% 0.08 74.4)
-
Step 950
950
#362200
oklch(27% 0.057 76.3)
#EFAA37 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) | #C3AD24 | 0.073 |
| Deuteranopia (no green cones) | #D3BE3B | 0.063 |
| Tritanopia (no blue cones) | #FF9893 | 0.121 |
| Achromatopsia (no color) | #B7B7B7 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFAA37
#EFAA37
oklch(78.5% 0.147 75.5)
- #89BCFF
#89BCFF
oklch(78.5% 0.11 255.5)
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 #EFAA37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Squash #F2AB15 ΔE 0.016
- Macaroni And Cheese #EFB435 ΔE 0.025
- Mango #FFA62B ΔE 0.026
- Light Orange #FDAA48 ΔE 0.028
- Orange #FFA500 ΔE 0.028
- Butterscotch #FDB147 ΔE 0.031
- Orange Yellow #FFAD01 ΔE 0.032
- Yellow Orange #FCB001 ΔE 0.032
Use #EFAA37 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.