#599900
Closest named color: Grassy Green (#419C03). oklch(61.5% 0.173 132.8), rgb(89, 153, 0).
Aa
Black text reads best on this color (5.98:1).
About this color
#599900 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.173 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.022 away. Black text reads best on it, at 5.98:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 5.98:1 |
| White text | 3.51:1 |
Values
| HEX | #599900 |
| RGB | rgb(89, 153, 0) |
| HSL | hsl(85, 100%, 30%) |
| OKLCH | oklch(61.5% 0.173 132.8) |
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 #599900 | 3.51:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #599900 | 5.98:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #599900 text on white | 3.51:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #599900 text on black | 5.98:1 | AA | Lc -39.3 | 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
#F2F7EF
oklch(97% 0.012 133.4)
-
Step 100
100
#E4EEDD
oklch(93.7% 0.025 132.1)
-
Step 200
200
#CDE0C1
oklch(88.4% 0.046 133.2)
-
Step 300
300
#ACCD94
oklch(81% 0.085 132.5)
-
Step 400
400
#7FB255
oklch(70.7% 0.135 132.7)
-
Step 500
500 (this color)
#599900
oklch(61.5% 0.173 132.8)
-
Step 600
600
#4D8500
oklch(55.6% 0.156 132.7)
-
Step 700
700
#407000
oklch(49.1% 0.138 132.7)
-
Step 800
800
#335C00
oklch(42.8% 0.12 132.9)
-
Step 900
900
#2A4C00
oklch(37.6% 0.105 132.5)
-
Step 950
950
#182D03
oklch(26.9% 0.071 132.6)
#599900 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) | #A08C00 | 0.099 |
| Deuteranopia (no green cones) | #97871D | 0.097 |
| Tritanopia (no blue cones) | #599281 | 0.130 |
| Achromatopsia (no color) | #898989 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599900
#599900
oklch(61.5% 0.173 132.8)
- #A860CE
#A860CE
oklch(61.6% 0.173 312.6)
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 #599900, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.022
- Grass Green #3F9B0B ΔE 0.022
- Dark Yellow Green #728F02 ΔE 0.039
- Sap Green #5C8B15 ΔE 0.043
- Olive Drab #6B8E23 ΔE 0.043
- Leaf Green #5CA904 ΔE 0.046
- Mid Green #50A747 ΔE 0.048
- Mossy Green #638B27 ΔE 0.049
Use #599900 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.