#AEC039
Closest named color: Pea (#A4BF20). oklch(76.9% 0.156 116.8), rgb(174, 192, 57).
Aa
Black text reads best on this color (10.39:1).
About this color
#AEC039 is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.156 and its hue 117°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.021 away. Black text reads best on it, at 10.39:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.39:1 |
| White text | 2.01:1 |
Values
| HEX | #AEC039 |
| RGB | rgb(174, 192, 57) |
| HSL | hsl(68, 54%, 49%) |
| OKLCH | oklch(76.9% 0.156 116.8) |
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 #AEC039 | 2.01:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #AEC039 | 10.39:1 | AAA | Lc 64.8 | Content text, not long reading |
| #AEC039 text on white | 2.01:1 | Fails | Lc 39.1 | Non-text elements, placeholder text |
| #AEC039 text on black | 10.39:1 | AAA | Lc -63.3 | 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
#F4F8E8
oklch(97.2% 0.021 118.2)
-
Step 100
100
#E7EECD
oklch(93.5% 0.044 117)
-
Step 200
200
#D5E19F
oklch(88.5% 0.087 116.6)
-
Step 300
300 (this color)
#AEC039
oklch(76.9% 0.156 116.8)
-
Step 400
400
#9BAC00
oklch(70.7% 0.162 116.6)
-
Step 500
500
#849400
oklch(63.2% 0.146 117.1)
-
Step 600
600
#6F7C00
oklch(55.6% 0.128 116.8)
-
Step 700
700
#5D6800
oklch(49.1% 0.113 116.8)
-
Step 800
800
#4C5500
oklch(42.7% 0.098 116.6)
-
Step 900
900
#3F4700
oklch(37.7% 0.087 116.8)
-
Step 950
950
#252A00
oklch(27.1% 0.062 116.5)
#AEC039 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) | #CDB622 | 0.047 |
| Deuteranopia (no green cones) | #CBB744 | 0.049 |
| Tritanopia (no blue cones) | #B9B5A6 | 0.136 |
| Achromatopsia (no color) | #B6B6B6 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC039
#AEC039
oklch(76.9% 0.156 116.8)
- #BDA1FF
#BDA1FF
oklch(76.9% 0.134 296.8)
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 #AEC039, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.021
- Light Olive Green #A4BE5C ΔE 0.031
- Olive Yellow #C2B709 ΔE 0.033
- Mustard Green #A8B504 ΔE 0.034
- Bright Olive #9CBB04 ΔE 0.036
- Light Olive #ACBF69 ΔE 0.043
- Yellow Green #9ACD32 ΔE 0.043
- Mustard Yellow #D2BD0A ΔE 0.049
Use #AEC039 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.