#99BB59
Closest named color: Light Olive Green (#A4BE5C). oklch(74.6% 0.132 125.3), rgb(153, 187, 89).
Aa
Black text reads best on this color (9.60:1).
About this color
#99BB59 is a medium-light, moderately saturated green. In OKLCH its lightness is 75%, its chroma 0.132 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Olive Green (#A4BE5C), ΔE 0.017 away. Black text reads best on it, at 9.60:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Light Olive Green (#A4BE5C) |
| Black text | 9.60:1 |
| White text | 2.18:1 |
Values
| HEX | #99BB59 |
| RGB | rgb(153, 187, 89) |
| HSL | hsl(81, 42%, 54%) |
| OKLCH | oklch(74.6% 0.132 125.3) |
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 #99BB59 | 2.18:1 | Fails | Lc -47.7 | Large or bold text, headings |
| Black text on #99BB59 | 9.60:1 | AAA | Lc 61.0 | Content text, not long reading |
| #99BB59 text on white | 2.18:1 | Fails | Lc 42.9 | Non-text elements, placeholder text |
| #99BB59 text on black | 9.60:1 | AAA | Lc -59.3 | 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
#F4F7EF
oklch(97.2% 0.011 123.5)
-
Step 100
100
#E6EDDC
oklch(93.6% 0.024 125.2)
-
Step 200
200
#D2DFBF
oklch(88.5% 0.045 125.3)
-
Step 300
300
#B4CB90
oklch(81% 0.083 125.5)
-
Step 400
400 (this color)
#99BB59
oklch(74.6% 0.132 125.3)
-
Step 500
500
#739900
oklch(63.1% 0.159 125.3)
-
Step 600
600
#608100
oklch(55.7% 0.141 125.5)
-
Step 700
700
#506C00
oklch(49.1% 0.124 125.4)
-
Step 800
800
#415800
oklch(42.6% 0.107 125.2)
-
Step 900
900
#364A00
oklch(37.8% 0.095 125.3)
-
Step 950
950
#1F2C00
oklch(27.1% 0.068 125.1)
#99BB59 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) | #C4B150 | 0.061 |
| Deuteranopia (no green cones) | #BFAF5F | 0.062 |
| Tritanopia (no blue cones) | #9EB3A5 | 0.107 |
| Achromatopsia (no color) | #AFAFAF | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BB59
#99BB59
oklch(74.6% 0.132 125.3)
- #C096EF
#C096EF
oklch(74.5% 0.132 305.1)
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 #99BB59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Olive Green #A4BE5C ΔE 0.017
- Light Olive #ACBF69 ΔE 0.034
- Tan Green #A9BE70 ΔE 0.035
- Avocado #90B134 ΔE 0.040
- Pea #A4BF20 ΔE 0.044
- Mustard Green #A8B504 ΔE 0.045
- Lichen #8FB67B ΔE 0.046
- Light Moss Green #A6C875 ΔE 0.046
Use #99BB59 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.