#EFDA66
Closest named color: Dull Yellow (#EEDC5B). oklch(88.3% 0.138 99.2), rgb(239, 218, 102).
Aa
Black text reads best on this color (14.89:1).
About this color
#EFDA66 is a light, moderately saturated yellow. In OKLCH its lightness is 88%, its chroma 0.138 and its hue 99°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Yellow (#EEDC5B), ΔE 0.012 away. Black text reads best on it, at 14.89:1.
| Hue family | Yellows |
| Lightness | light (88%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Dull Yellow (#EEDC5B) |
| Black text | 14.89:1 |
| White text | 1.41:1 |
Values
| HEX | #EFDA66 |
| RGB | rgb(239, 218, 102) |
| HSL | hsl(51, 81%, 67%) |
| OKLCH | oklch(88.3% 0.138 99.2) |
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 #EFDA66 | 1.41:1 | Fails | Lc -22.5 | Dividers and decoration only |
| Black text on #EFDA66 | 14.89:1 | AAA | Lc 84.0 | Fine for body text |
| #EFDA66 text on white | 1.41:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #EFDA66 text on black | 14.89:1 | AAA | Lc -83.7 | Fine for body text |
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 200.
-
Step 50
50
#F9F6E4
oklch(97.1% 0.024 99.1)
-
Step 100
100
#F2EBC4
oklch(93.6% 0.051 98.9)
-
Step 200
200 (this color)
#EFDA66
oklch(88.3% 0.138 99.2)
-
Step 300
300
#DCC100
oklch(80.9% 0.168 99.1)
-
Step 400
400
#B8A100
oklch(70.8% 0.147 99)
-
Step 500
500
#9D8A00
oklch(63.1% 0.131 99.5)
-
Step 600
600
#847400
oklch(55.7% 0.116 99.7)
-
Step 700
700
#6F6100
oklch(49.1% 0.102 99.4)
-
Step 800
800
#5B4F00
oklch(42.7% 0.088 99.2)
-
Step 900
900
#4C4200
oklch(37.8% 0.078 99.5)
-
Step 950
950
#2D2600
oklch(26.8% 0.056 98.7)
#EFDA66 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) | #ECD55A | 0.015 |
| Deuteranopia (no green cones) | #F2DD6C | 0.010 |
| Tritanopia (no blue cones) | #FFCCC0 | 0.126 |
| Achromatopsia (no color) | #D9D9D9 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFDA66
#EFDA66
oklch(88.3% 0.138 99.2)
- #D0D5FF
#D0D5FF
oklch(88.3% 0.058 279.8)
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 #EFDA66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Yellow #EEDC5B ΔE 0.012
- Light Mustard #F7D560 ΔE 0.015
- Sandy #F1DA7A ΔE 0.020
- Pale Gold #FDDE6C ΔE 0.024
- Maize #F4D054 ΔE 0.025
- Sand Yellow #FCE166 ΔE 0.027
- Sunglow #FFD166 ΔE 0.031
- Yellow Tan #FFE36E ΔE 0.034
Use #EFDA66 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.