#ACA019
Closest named color: Brown Yellow (#B29705). oklch(69.5% 0.141 103.8), rgb(172, 160, 25).
Aa
Black text reads best on this color (7.79:1).
About this color
#ACA019 is a medium-light, vivid yellow. In OKLCH its lightness is 69%, its chroma 0.141 and its hue 104°. Its hue sits on the warm side of the wheel. The nearest named color is Brown Yellow (#B29705), ΔE 0.024 away. Black text reads best on it, at 7.79:1.
| Hue family | Yellows |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Brown Yellow (#B29705) |
| Black text | 7.79:1 |
| White text | 2.69:1 |
Values
| HEX | #ACA019 |
| RGB | rgb(172, 160, 25) |
| HSL | hsl(55, 75%, 39%) |
| OKLCH | oklch(69.5% 0.141 103.8) |
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 #ACA019 | 2.69:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #ACA019 | 7.79:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #ACA019 text on white | 2.69:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #ACA019 text on black | 7.79:1 | AAA | Lc -49.8 | 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
#F6F6ED
oklch(97.1% 0.012 106.6)
-
Step 100
100
#ECEBD8
oklch(93.6% 0.025 104.4)
-
Step 200
200
#DEDBB6
oklch(88.4% 0.049 103.5)
-
Step 300
300
#CAC480
oklch(80.9% 0.088 103.9)
-
Step 400
400 (this color)
#ACA019
oklch(69.5% 0.141 103.8)
-
Step 500
500
#988C00
oklch(63.1% 0.133 103.5)
-
Step 600
600
#7F7600
oklch(55.6% 0.118 104.3)
-
Step 700
700
#6B6300
oklch(49.2% 0.104 104)
-
Step 800
800
#585100
oklch(42.8% 0.09 103.8)
-
Step 900
900
#494300
oklch(37.7% 0.08 103.8)
-
Step 950
950
#2B2700
oklch(26.9% 0.057 103.7)
#ACA019 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) | #AF9A00 | 0.015 |
| Deuteranopia (no green cones) | #B3A026 | 0.013 |
| Tritanopia (no blue cones) | #BA9488 | 0.129 |
| Achromatopsia (no color) | #9E9E9E | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ACA019
#ACA019
oklch(69.5% 0.141 103.8)
- #938FF0
#938FF0
oklch(69.4% 0.14 284)
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 #ACA019, closest first.
No curated palette has a color within ΔE 0.04 of #ACA019.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown Yellow #B29705 ΔE 0.024
- Ocher #BF9B0C ΔE 0.031
- Dark Gold #B59410 ΔE 0.033
- Yellow Brown #B79400 ΔE 0.033
- Pea Soup Green #94A617 ΔE 0.038
- Ocre #C69C04 ΔE 0.040
- Muddy Yellow #BFAC05 ΔE 0.045
- Pea Soup #929901 ΔE 0.046
Use #ACA019 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.