#AC9900
Closest named color: Brown Yellow (#B29705). oklch(67.9% 0.141 100.5), rgb(172, 153, 0).
Aa
Black text reads best on this color (7.31:1).
About this color
#AC9900 is a medium-light, vivid yellow. In OKLCH its lightness is 68%, its chroma 0.141 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Brown Yellow (#B29705), ΔE 0.011 away. Black text reads best on it, at 7.31:1.
| Hue family | Yellows |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Brown Yellow (#B29705) |
| Black text | 7.31:1 |
| White text | 2.87:1 |
Values
| HEX | #AC9900 |
| RGB | rgb(172, 153, 0) |
| HSL | hsl(53, 100%, 34%) |
| OKLCH | oklch(67.9% 0.141 100.5) |
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 #AC9900 | 2.87:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #AC9900 | 7.31:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #AC9900 text on white | 2.87:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #AC9900 text on black | 7.31:1 | AAA | Lc -47.1 | 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
#F7F6ED
oklch(97.1% 0.012 101.5)
-
Step 100
100
#EDEBD8
oklch(93.7% 0.025 102)
-
Step 200
200
#E0DBB6
oklch(88.6% 0.049 101)
-
Step 300
300
#CDC37F
oklch(81% 0.089 100.9)
-
Step 400
400 (this color)
#AC9900
oklch(67.9% 0.141 100.5)
-
Step 500
500
#9C8A00
oklch(63% 0.131 100.1)
-
Step 600
600
#837400
oklch(55.6% 0.116 100.3)
-
Step 700
700
#6E6100
oklch(49% 0.102 100.2)
-
Step 800
800
#5A5000
oklch(42.8% 0.089 101.1)
-
Step 900
900
#4B4200
oklch(37.7% 0.078 100.6)
-
Step 950
950
#2D2700
oklch(27.1% 0.056 100.5)
#AC9900 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) | #A99400 | 0.015 |
| Deuteranopia (no green cones) | #AE9B17 | 0.008 |
| Tritanopia (no blue cones) | #BA8C82 | 0.131 |
| Achromatopsia (no color) | #989898 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC9900
#AC9900
oklch(67.9% 0.141 100.5)
- #898CED
#898CED
oklch(68% 0.142 280.6)
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 #AC9900, closest first.
No curated palette has a color within ΔE 0.04 of #AC9900.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown Yellow #B29705 ΔE 0.011
- Dark Gold #B59410 ΔE 0.020
- Yellow Brown #B79400 ΔE 0.021
- Ocher #BF9B0C ΔE 0.032
- Ochre #BF9005 ΔE 0.038
- Yellowy Brown #AE8B0C ΔE 0.038
- Pea Soup #929901 ΔE 0.040
- Ocre #C69C04 ΔE 0.043
Use #AC9900 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.