#C9E579
Closest named color: Dull Yellow (#EEDC5B). oklch(87.8% 0.138 121.3), rgb(201, 229, 121).
Aa
Black text reads best on this color (14.96:1).
About this color
#C9E579 is a light, moderately saturated yellow. In OKLCH its lightness is 88%, its chroma 0.138 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dull Yellow (#EEDC5B), ΔE 0.051 away. Black text reads best on it, at 14.96:1.
| Hue family | Yellows |
| Lightness | light (88%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dull Yellow (#EEDC5B) |
| Black text | 14.96:1 |
| White text | 1.40:1 |
Values
| HEX | #C9E579 |
| RGB | rgb(201, 229, 121) |
| HSL | hsl(76, 68%, 69%) |
| OKLCH | oklch(87.8% 0.138 121.3) |
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 #C9E579 | 1.40:1 | Fails | Lc -22.2 | Dividers and decoration only |
| Black text on #C9E579 | 14.96:1 | AAA | Lc 84.2 | Fine for body text |
| #C9E579 text on white | 1.40:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #C9E579 text on black | 14.96:1 | AAA | Lc -84.0 | 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
#F3F8E7
oklch(97.1% 0.023 120.2)
-
Step 100
100
#E4F0CA
oklch(93.6% 0.052 121.7)
-
Step 200
200 (this color)
#C9E579
oklch(87.8% 0.138 121.3)
-
Step 300
300
#B0D134
oklch(80.9% 0.178 121.1)
-
Step 400
400
#91AF00
oklch(70.6% 0.17 121.2)
-
Step 500
500
#7C9600
oklch(63% 0.151 121.2)
-
Step 600
600
#687E00
oklch(55.5% 0.133 121.1)
-
Step 700
700
#576A00
oklch(49.1% 0.118 121.1)
-
Step 800
800
#475700
oklch(42.8% 0.103 121.1)
-
Step 900
900
#3A4800
oklch(37.6% 0.091 121.4)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#C9E579 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) | #F0DA70 | 0.055 |
| Deuteranopia (no green cones) | #EDDA7F | 0.057 |
| Tritanopia (no blue cones) | #D1DBCC | 0.116 |
| Achromatopsia (no color) | #DADADA | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9E579
#C9E579
oklch(87.8% 0.138 121.3)
- #DFCDFF
#DFCDFF
oklch(87.9% 0.071 301.4)
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 #C9E579, closest first.
No curated palette has a color within ΔE 0.04 of #C9E579.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Yellow #EEDC5B ΔE 0.051
- Pistachio #C0FA8B ΔE 0.052
- Light Grey Green #B7E1A1 ΔE 0.052
- Washed Out Green #BCF5A6 ΔE 0.053
- Greenish Beige #C9D179 ΔE 0.053
- Light Sage #BCECAC ΔE 0.054
- Khaki #F0E68C ΔE 0.059
- Sandy #F1DA7A ΔE 0.059
Use #C9E579 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.