#99B915
Closest named color: Bright Olive (#9CBB04). oklch(73.6% 0.173 121.5), rgb(153, 185, 21).
Aa
Black text reads best on this color (9.30:1).
About this color
#99B915 is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.173 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bright Olive (#9CBB04), ΔE 0.008 away. Black text reads best on it, at 9.30:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Bright Olive (#9CBB04) |
| Black text | 9.30:1 |
| White text | 2.25:1 |
Values
| HEX | #99B915 |
| RGB | rgb(153, 185, 21) |
| HSL | hsl(72, 80%, 40%) |
| OKLCH | oklch(73.6% 0.173 121.5) |
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 #99B915 | 2.25:1 | Fails | Lc -49.1 | Large or bold text, headings |
| Black text on #99B915 | 9.30:1 | AAA | Lc 59.7 | Large or bold text, headings |
| #99B915 text on white | 2.25:1 | Fails | Lc 44.3 | Non-text elements, placeholder text |
| #99B915 text on black | 9.30:1 | AAA | Lc -57.8 | 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
#E6EED7
oklch(93.7% 0.032 122.7)
-
Step 200
200
#D2E0B4
oklch(88.5% 0.06 122)
-
Step 300
300
#B5CC7B
oklch(80.9% 0.109 121.8)
-
Step 400
400 (this color)
#99B915
oklch(73.6% 0.173 121.5)
-
Step 500
500
#7C9600
oklch(63% 0.151 121.2)
-
Step 600
600
#677E00
oklch(55.5% 0.134 121.5)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4800
oklch(37.6% 0.091 121.4)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#99B915 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) | #C5AD00 | 0.066 |
| Deuteranopia (no green cones) | #C1AD2B | 0.066 |
| Tritanopia (no blue cones) | #A2AF9D | 0.145 |
| Achromatopsia (no color) | #ADADAD | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B915
#99B915
oklch(73.6% 0.173 121.5)
- #BC8EFF
#BC8EFF
oklch(73.6% 0.164 301.3)
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 #99B915, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Olive #9CBB04 ΔE 0.008
- Mustard Green #A8B504 ΔE 0.021
- Pea #A4BF20 ΔE 0.023
- Dark Lime #84B701 ΔE 0.028
- Avocado #90B134 ΔE 0.031
- Dark Lime Green #7EBD01 ΔE 0.035
- Icky Green #8FAE22 ΔE 0.035
- Pea Green #8EAB12 ΔE 0.042
Use #99B915 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.