#EFC643
Closest named color: Golden (#F5BF03). oklch(84% 0.15 91), rgb(239, 198, 67).
Aa
Black text reads best on this color (12.82:1).
About this color
#EFC643 is a light, vivid yellow. In OKLCH its lightness is 84%, its chroma 0.150 and its hue 91°. Its hue sits on the warm side of the wheel. The nearest named color is Golden (#F5BF03), ΔE 0.024 away. Black text reads best on it, at 12.82:1.
| Hue family | Yellows |
| Lightness | light (84%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Golden (#F5BF03) |
| Black text | 12.82:1 |
| White text | 1.63:1 |
Values
| HEX | #EFC643 |
| RGB | rgb(239, 198, 67) |
| HSL | hsl(46, 84%, 60%) |
| OKLCH | oklch(84% 0.15 91) |
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 #EFC643 | 1.63:1 | Fails | Lc -31.8 | Non-text elements, placeholder text |
| Black text on #EFC643 | 12.82:1 | AAA | Lc 75.6 | Fine for body text |
| #EFC643 text on white | 1.63:1 | Fails | Lc 28.2 | Dividers and decoration only |
| #EFC643 text on black | 12.82:1 | AAA | Lc -74.7 | 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
#FAF5E7
oklch(97% 0.019 90.5)
-
Step 100
100
#F5E9CA
oklch(93.6% 0.043 89.4)
-
Step 200
200
#EED89A
oklch(88.6% 0.083 90.8)
-
Step 300
300 (this color)
#EFC643
oklch(84% 0.15 91)
-
Step 400
400
#C29C00
oklch(70.7% 0.145 91.2)
-
Step 500
500
#A78500
oklch(63.1% 0.129 90.6)
-
Step 600
600
#8C7000
oklch(55.6% 0.114 91.4)
-
Step 700
700
#765E00
oklch(49.2% 0.101 91.4)
-
Step 800
800
#614C00
oklch(42.6% 0.087 90.4)
-
Step 900
900
#513F00
oklch(37.6% 0.077 90.4)
-
Step 950
950
#302500
oklch(26.9% 0.055 91.9)
#EFC643 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) | #DCC32F | 0.034 |
| Deuteranopia (no green cones) | #E6CF4A | 0.024 |
| Tritanopia (no blue cones) | #FFB6AC | 0.135 |
| Achromatopsia (no color) | #CACACA | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFC643
#EFC643
oklch(84% 0.15 91)
- #B7C8FF
#B7C8FF
oklch(83.9% 0.08 271.3)
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 #EFC643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Golden #F5BF03 ΔE 0.024
- Marigold #FCC006 ΔE 0.026
- Maize #F4D054 ΔE 0.027
- Golden Yellow #FEC615 ΔE 0.027
- Maximum Yellow Red #FCBF49 ΔE 0.027
- Sunflower #FFC512 ΔE 0.028
- Golden Rod #F9BC08 ΔE 0.028
- Amber #FFBE0B ΔE 0.030
Use #EFC643 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.