#9FB421
Closest named color: Mustard Green (#A8B504). oklch(72.9% 0.161 118.1), rgb(159, 180, 33).
Aa
Black text reads best on this color (9.02:1).
About this color
#9FB421 is a medium-light, vivid yellow. In OKLCH its lightness is 73%, its chroma 0.161 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.014 away. Black text reads best on it, at 9.02:1.
| Hue family | Yellows |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.02:1 |
| White text | 2.32:1 |
Values
| HEX | #9FB421 |
| RGB | rgb(159, 180, 33) |
| HSL | hsl(69, 69%, 42%) |
| OKLCH | oklch(72.9% 0.161 118.1) |
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 #9FB421 | 2.32:1 | Fails | Lc -50.6 | Large or bold text, headings |
| Black text on #9FB421 | 9.02:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #9FB421 text on white | 2.32:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #9FB421 text on black | 9.02:1 | AAA | Lc -56.4 | Large or bold text, headings |
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 400.
-
Step 50
50
#F4F7ED
oklch(97.1% 0.014 120.3)
-
Step 100
100
#E8EDD7
oklch(93.6% 0.03 117.4)
-
Step 200
200
#D5DFB5
oklch(88.5% 0.057 118.5)
-
Step 300
300
#BACA7E
oklch(80.9% 0.101 118.4)
-
Step 400
400 (this color)
#9FB421
oklch(72.9% 0.161 118.1)
-
Step 500
500
#829400
oklch(63% 0.147 118)
-
Step 600
600
#6D7D00
oklch(55.7% 0.13 118.3)
-
Step 700
700
#5B6900
oklch(49.2% 0.115 118.5)
-
Step 800
800
#4A5600
oklch(42.8% 0.1 118.6)
-
Step 900
900
#3E4700
oklch(37.7% 0.087 117.6)
-
Step 950
950
#242A00
oklch(27% 0.063 117.7)
#9FB421 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) | #C0AA00 | 0.050 |
| Deuteranopia (no green cones) | #BEAB31 | 0.053 |
| Tritanopia (no blue cones) | #A9AA9A | 0.139 |
| Achromatopsia (no color) | #AAAAAA | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #9FB421
#9FB421
oklch(72.9% 0.161 118.1)
- #B58EFE
#B58EFE
oklch(72.9% 0.161 298.4)
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 #9FB421, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.014
- Bright Olive #9CBB04 ΔE 0.023
- Avocado #90B134 ΔE 0.023
- Icky Green #8FAE22 ΔE 0.028
- Pea #A4BF20 ΔE 0.031
- Pea Green #8EAB12 ΔE 0.036
- Dark Lime #84B701 ΔE 0.038
- Pea Soup Green #94A617 ΔE 0.042
Use #9FB421 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.