#99BB38
Closest named color: Bright Olive (#9CBB04). oklch(74.2% 0.159 123), rgb(153, 187, 56).
Aa
Black text reads best on this color (9.51:1).
About this color
#99BB38 is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.159 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bright Olive (#9CBB04), ΔE 0.019 away. Black text reads best on it, at 9.51:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Bright Olive (#9CBB04) |
| Black text | 9.51:1 |
| White text | 2.20:1 |
Values
| HEX | #99BB38 |
| RGB | rgb(153, 187, 56) |
| HSL | hsl(76, 54%, 48%) |
| OKLCH | oklch(74.2% 0.159 123) |
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 #99BB38 | 2.20:1 | Fails | Lc -48.0 | Large or bold text, headings |
| Black text on #99BB38 | 9.51:1 | AAA | Lc 60.7 | Content text, not long reading |
| #99BB38 text on white | 2.20:1 | Fails | Lc 43.3 | Non-text elements, placeholder text |
| #99BB38 text on black | 9.51:1 | AAA | Lc -58.9 | 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
#F4F7ED
oklch(97.1% 0.014 120.3)
-
Step 100
100
#E6EDD9
oklch(93.5% 0.028 122.7)
-
Step 200
200
#D2E0B8
oklch(88.6% 0.055 123.2)
-
Step 300
300
#B4CC83
oklch(81% 0.1 123.4)
-
Step 400
400 (this color)
#99BB38
oklch(74.2% 0.159 123)
-
Step 500
500
#789700
oklch(63% 0.154 123)
-
Step 600
600
#657F00
oklch(55.6% 0.136 122.8)
-
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
#394900
oklch(37.8% 0.092 122.7)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#99BB38 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) | #C6AF23 | 0.065 |
| Deuteranopia (no green cones) | #C1AE43 | 0.067 |
| Tritanopia (no blue cones) | #A1B2A1 | 0.131 |
| Achromatopsia (no color) | #AFAFAF | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BB38
#99BB38
oklch(74.2% 0.159 123)
- #C090FD
#C090FD
oklch(74.2% 0.159 303)
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 #99BB38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Olive #9CBB04 ΔE 0.019
- Pea #A4BF20 ΔE 0.022
- Mustard Green #A8B504 ΔE 0.025
- Avocado #90B134 ΔE 0.031
- Light Olive Green #A4BE5C ΔE 0.036
- Dark Lime #84B701 ΔE 0.038
- Icky Green #8FAE22 ΔE 0.039
- Dark Lime Green #7EBD01 ΔE 0.044
Use #99BB38 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.