#EFCB63
Closest named color: Maize (#F4D054). oklch(85.3% 0.129 90.4), rgb(239, 203, 99).
Aa
Black text reads best on this color (13.39:1).
About this color
#EFCB63 is a light, moderately saturated yellow. In OKLCH its lightness is 85%, its chroma 0.129 and its hue 90°. Its hue sits on the warm side of the wheel. The nearest named color is Maize (#F4D054), ΔE 0.022 away. Black text reads best on it, at 13.39:1.
| Hue family | Yellows |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Maize (#F4D054) |
| Black text | 13.39:1 |
| White text | 1.56:1 |
Values
| HEX | #EFCB63 |
| RGB | rgb(239, 203, 99) |
| HSL | hsl(45, 81%, 66%) |
| OKLCH | oklch(85.3% 0.129 90.4) |
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 #EFCB63 | 1.56:1 | Fails | Lc -29.2 | Dividers and decoration only |
| Black text on #EFCB63 | 13.39:1 | AAA | Lc 77.9 | Fine for body text |
| #EFCB63 text on white | 1.56:1 | Fails | Lc 25.8 | Dividers and decoration only |
| #EFCB63 text on black | 13.39:1 | AAA | Lc -77.2 | 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
#FBF5E5
oklch(97.1% 0.022 89.8)
-
Step 100
100
#F6E9C6
oklch(93.5% 0.048 90.1)
-
Step 200
200 (this color)
#EFCB63
oklch(85.3% 0.129 90.4)
-
Step 300
300
#E9BA00
oklch(80.8% 0.165 90.3)
-
Step 400
400
#C39B00
oklch(70.6% 0.144 90.2)
-
Step 500
500
#A78500
oklch(63.1% 0.129 90.6)
-
Step 600
600
#8D6F00
oklch(55.5% 0.113 89.9)
-
Step 700
700
#765D00
oklch(49% 0.1 90.4)
-
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
#312500
oklch(27.1% 0.055 90.3)
#EFCB63 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) | #DFC859 | 0.028 |
| Deuteranopia (no green cones) | #E7D367 | 0.022 |
| Tritanopia (no blue cones) | #FFBDB4 | 0.116 |
| Achromatopsia (no color) | #CECECE | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EFCB63
#EFCB63
oklch(85.3% 0.129 90.4)
- #BCCDFF
#BCCDFF
oklch(85.2% 0.072 270.2)
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 #EFCB63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Maize #F4D054 ΔE 0.022
- Saffron #E9C46A ΔE 0.023
- Sand #E2CA76 ΔE 0.025
- Sunglow #FFD166 ΔE 0.030
- Light Mustard #F7D560 ΔE 0.030
- Maximum Yellow Red #FCBF49 ΔE 0.033
- Sandy #F1DA7A ΔE 0.038
- Golden Yellow #FEC615 ΔE 0.043
Use #EFCB63 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.