#ECDF64
Closest named color: Dull Yellow (#EEDC5B). oklch(89.1% 0.144 103.3), rgb(236, 223, 100).
Aa
Black text reads best on this color (15.30:1).
About this color
#ECDF64 is a light, vivid yellow. In OKLCH its lightness is 89%, its chroma 0.144 and its hue 103°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Yellow (#EEDC5B), ΔE 0.009 away. Black text reads best on it, at 15.30:1.
| Hue family | Yellows |
| Lightness | light (89%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Dull Yellow (#EEDC5B) |
| Black text | 15.30:1 |
| White text | 1.37:1 |
Values
| HEX | #ECDF64 |
| RGB | rgb(236, 223, 100) |
| HSL | hsl(54, 78%, 66%) |
| OKLCH | oklch(89.1% 0.144 103.3) |
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 #ECDF64 | 1.37:1 | Fails | Lc -20.7 | Dividers and decoration only |
| Black text on #ECDF64 | 15.30:1 | AAA | Lc 85.6 | Fine for body text |
| #ECDF64 text on white | 1.37:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #ECDF64 text on black | 15.30:1 | AAA | Lc -85.5 | 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
#F8F7E4
oklch(97.2% 0.025 104.4)
-
Step 100
100
#F0ECC3
oklch(93.6% 0.054 102.8)
-
Step 200
200 (this color)
#ECDF64
oklch(89.1% 0.144 103.3)
-
Step 300
300
#D5C400
oklch(80.9% 0.17 103.2)
-
Step 400
400
#B2A400
oklch(70.8% 0.149 103.4)
-
Step 500
500
#988C00
oklch(63.1% 0.133 103.5)
-
Step 600
600
#807500
oklch(55.5% 0.117 103)
-
Step 700
700
#6C6300
oklch(49.3% 0.104 103.3)
-
Step 800
800
#585100
oklch(42.8% 0.09 103.8)
-
Step 900
900
#494300
oklch(37.7% 0.08 103.8)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#ECDF64 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) | #F1D857 | 0.018 |
| Deuteranopia (no green cones) | #F5DF6A | 0.015 |
| Tritanopia (no blue cones) | #FCD1C4 | 0.131 |
| Achromatopsia (no color) | #DCDCDC | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ECDF64
#ECDF64
oklch(89.1% 0.144 103.3)
- #D5D7FF
#D5D7FF
oklch(89% 0.055 283)
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 #ECDF64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Yellow #EEDC5B ΔE 0.009
- Sand Yellow #FCE166 ΔE 0.024
- Pale Gold #FDDE6C ΔE 0.027
- Light Mustard #F7D560 ΔE 0.028
- Sandy #F1DA7A ΔE 0.030
- Yellow Tan #FFE36E ΔE 0.032
- Maize #F4D054 ΔE 0.036
- Khaki #F0E68C ΔE 0.039
Use #ECDF64 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.