#A5B321
Closest named color: Mustard Green (#A8B504). oklch(73.1% 0.158 115.4), rgb(165, 179, 33).
Aa
Black text reads best on this color (9.06:1).
About this color
#A5B321 is a medium-light, vivid yellow. In OKLCH its lightness is 73%, its chroma 0.158 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.011 away. Black text reads best on it, at 9.06:1.
| Hue family | Yellows |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.06:1 |
| White text | 2.31:1 |
Values
| HEX | #A5B321 |
| RGB | rgb(165, 179, 33) |
| HSL | hsl(66, 69%, 42%) |
| OKLCH | oklch(73.1% 0.158 115.4) |
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 #A5B321 | 2.31:1 | Fails | Lc -50.4 | Large or bold text, headings |
| Black text on #A5B321 | 9.06:1 | AAA | Lc 58.5 | Large or bold text, headings |
| #A5B321 text on white | 2.31:1 | Fails | Lc 45.5 | Large or bold text, headings |
| #A5B321 text on black | 9.06:1 | AAA | Lc -56.6 | 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
#F5F7ED
oklch(97.2% 0.013 115.8)
-
Step 100
100
#E9EDD7
oklch(93.7% 0.029 115.3)
-
Step 200
200
#D7DEB5
oklch(88.5% 0.055 115.4)
-
Step 300
300
#BEC97E
oklch(81% 0.098 115.5)
-
Step 400
400 (this color)
#A5B321
oklch(73.1% 0.158 115.4)
-
Step 500
500
#879300
oklch(63.2% 0.144 115.4)
-
Step 600
600
#717B00
oklch(55.5% 0.126 115.3)
-
Step 700
700
#5F6700
oklch(49% 0.111 115)
-
Step 800
800
#4D5500
oklch(42.8% 0.098 115.9)
-
Step 900
900
#404600
oklch(37.6% 0.085 115.2)
-
Step 950
950
#252A00
oklch(27.1% 0.062 116.5)
#A5B321 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) | #C0A900 | 0.043 |
| Deuteranopia (no green cones) | #BFAB30 | 0.045 |
| Tritanopia (no blue cones) | #B0A899 | 0.139 |
| Achromatopsia (no color) | #AAAAAA | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A5B321
#A5B321
oklch(73.1% 0.158 115.4)
- #B191FF
#B191FF
oklch(73.1% 0.157 295.7)
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 #A5B321, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.011
- Bright Olive #9CBB04 ΔE 0.028
- Avocado #90B134 ΔE 0.029
- Pea #A4BF20 ΔE 0.032
- Icky Green #8FAE22 ΔE 0.034
- Muddy Yellow #BFAC05 ΔE 0.039
- Pea Green #8EAB12 ΔE 0.041
- Olive Yellow #C2B709 ΔE 0.043
Use #A5B321 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.