#999900
Closest named color: Pea Soup (#929901). oklch(66.1% 0.144 109.8), rgb(153, 153, 0).
Aa
Black text reads best on this color (6.91:1).
About this color
#999900 is a medium-light, vivid yellow. In OKLCH its lightness is 66%, its chroma 0.144 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Pea Soup (#929901), ΔE 0.010 away. Black text reads best on it, at 6.91:1.
| Hue family | Yellows |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Pea Soup (#929901) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #999900 |
| RGB | rgb(153, 153, 0) |
| HSL | hsl(60, 100%, 30%) |
| OKLCH | oklch(66.1% 0.144 109.8) |
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 #999900 | 3.03:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #999900 | 6.91:1 | AA | Lc 47.1 | Large or bold text, headings |
| #999900 text on white | 3.03:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #999900 text on black | 6.91:1 | AA | Lc -44.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F6F6EF
oklch(97.1% 0.009 106.6)
-
Step 100
100
#EAEBDC
oklch(93.5% 0.02 109.9)
-
Step 200
200
#DADCBF
oklch(88.5% 0.039 110.4)
-
Step 300
300
#C3C590
oklch(80.9% 0.071 109.7)
-
Step 400
400
#A5A74D
oklch(70.8% 0.114 110.1)
-
Step 500
500 (this color)
#999900
oklch(66.1% 0.144 109.8)
-
Step 600
600
#787800
oklch(55.4% 0.121 109.8)
-
Step 700
700
#656500
oklch(49.1% 0.107 109.8)
-
Step 800
800
#535300
oklch(42.8% 0.093 109.8)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#292900
oklch(27.2% 0.059 109.8)
#999900 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) | #A69200 | 0.026 |
| Deuteranopia (no green cones) | #A89619 | 0.027 |
| Tritanopia (no blue cones) | #A58E82 | 0.131 |
| Achromatopsia (no color) | #949494 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999900
#999900
oklch(66.1% 0.144 109.8)
- #9281E4
#9281E4
oklch(66.1% 0.144 289.8)
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 #999900, closest first.
No curated palette has a color within ΔE 0.04 of #999900.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea Soup #929901 ΔE 0.010
- Pea Soup Green #94A617 ΔE 0.034
- Brown Yellow #B29705 ΔE 0.039
- Avocado Green #87A922 ΔE 0.046
- Dark Gold #B59410 ΔE 0.046
- Dark Mustard #A88905 ΔE 0.048
- Yellow Brown #B79400 ΔE 0.048
- Yellowy Brown #AE8B0C ΔE 0.049
Use #999900 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.