#99B751
Closest named color: Light Olive Green (#A4BE5C). oklch(73.5% 0.134 123.4), rgb(153, 183, 81).
Aa
Black text reads best on this color (9.24:1).
About this color
#99B751 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 74%, its chroma 0.134 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Olive Green (#A4BE5C), ΔE 0.026 away. Black text reads best on it, at 9.24:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Light Olive Green (#A4BE5C) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #99B751 |
| RGB | rgb(153, 183, 81) |
| HSL | hsl(78, 41%, 52%) |
| OKLCH | oklch(73.5% 0.134 123.4) |
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 #99B751 | 2.27:1 | Fails | Lc -49.5 | Large or bold text, headings |
| Black text on #99B751 | 9.24:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #99B751 text on white | 2.27:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #99B751 text on black | 9.24:1 | AAA | Lc -57.4 | 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
#E6EDDB
oklch(93.6% 0.025 124.3)
-
Step 200
200
#D3DFBD
oklch(88.6% 0.047 123.2)
-
Step 300
300
#B6CA8E
oklch(80.9% 0.083 123.2)
-
Step 400
400 (this color)
#99B751
oklch(73.5% 0.134 123.4)
-
Step 500
500
#789800
oklch(63.2% 0.156 123.3)
-
Step 600
600
#647F00
oklch(55.5% 0.136 123.2)
-
Step 700
700
#546B00
oklch(49.1% 0.121 123.1)
-
Step 800
800
#445800
oklch(42.8% 0.106 123.5)
-
Step 900
900
#384900
oklch(37.7% 0.093 123.4)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#99B751 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) | #C0AD47 | 0.056 |
| Deuteranopia (no green cones) | #BCAC57 | 0.057 |
| Tritanopia (no blue cones) | #9FAFA0 | 0.109 |
| Achromatopsia (no color) | #ACACAC | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B751
#99B751
oklch(73.5% 0.134 123.4)
- #BB93EE
#BB93EE
oklch(73.5% 0.134 303.5)
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 #99B751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Olive Green #A4BE5C ΔE 0.026
- Avocado #90B134 ΔE 0.030
- Mustard Green #A8B504 ΔE 0.039
- Icky Green #8FAE22 ΔE 0.042
- Light Olive #ACBF69 ΔE 0.042
- Turtle Green #75B84F ΔE 0.043
- Tan Green #A9BE70 ΔE 0.043
- Bright Olive #9CBB04 ΔE 0.044
Use #99B751 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.