#AACE59
Closest named color: Pale Olive Green (#B1D27B). oklch(80.1% 0.15 124.1), rgb(170, 206, 89).
Aa
Black text reads best on this color (11.68:1).
About this color
#AACE59 is a light, vivid yellow. In OKLCH its lightness is 80%, its chroma 0.150 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pale Olive Green (#B1D27B), ΔE 0.036 away. Black text reads best on it, at 11.68:1.
| Hue family | Yellows |
| Lightness | light (80%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Pale Olive Green (#B1D27B) |
| Black text | 11.68:1 |
| White text | 1.79:1 |
Values
| HEX | #AACE59 |
| RGB | rgb(170, 206, 89) |
| HSL | hsl(78, 54%, 58%) |
| OKLCH | oklch(80.1% 0.15 124.1) |
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 #AACE59 | 1.79:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #AACE59 | 11.68:1 | AAA | Lc 70.6 | Content text, not long reading |
| #AACE59 text on white | 1.79:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #AACE59 text on black | 11.68:1 | AAA | Lc -69.4 | 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
#F2F8E9
oklch(97.1% 0.021 124.7)
-
Step 100
100
#E4EFD0
oklch(93.6% 0.043 123.1)
-
Step 200
200
#CDE3A6
oklch(88.4% 0.084 124.2)
-
Step 300
300 (this color)
#AACE59
oklch(80.1% 0.15 124.1)
-
Step 400
400
#8AB100
oklch(70.6% 0.175 124)
-
Step 500
500
#769800
oklch(63.1% 0.157 124)
-
Step 600
600
#638000
oklch(55.7% 0.138 124)
-
Step 700
700
#526B00
oklch(49% 0.122 124.1)
-
Step 800
800
#435800
oklch(42.7% 0.106 124.1)
-
Step 900
900
#374900
oklch(37.6% 0.094 124.1)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#AACE59 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) | #D9C24D | 0.067 |
| Deuteranopia (no green cones) | #D4C161 | 0.067 |
| Tritanopia (no blue cones) | #B1C5B4 | 0.122 |
| Achromatopsia (no color) | #C1C1C1 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACE59
#AACE59
oklch(80.1% 0.15 124.1)
- #CFAAFF
#CFAAFF
oklch(80.1% 0.123 303.7)
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 #AACE59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Olive Green #B1D27B ΔE 0.036
- Light Moss Green #A6C875 ΔE 0.037
- Yellow Green #9ACD32 ΔE 0.038
- Light Olive Green #A4BE5C ΔE 0.046
- Greenish Tan #BCCB7A ΔE 0.047
- Light Olive #ACBF69 ΔE 0.049
- Pea #A4BF20 ΔE 0.050
- Pale Olive #B9CC81 ΔE 0.052
Use #AACE59 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.