#00CC99
Closest named color: Greenblue (#23C48B). oklch(75% 0.154 166.9), rgb(0, 204, 153).
Aa
Black text reads best on this color (10.09:1).
About this color
#00CC99 is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.154 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.024 away. Black text reads best on it, at 10.09:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 10.09:1 |
| White text | 2.07:1 |
Values
| HEX | #00CC99 |
| RGB | rgb(0, 204, 153) |
| HSL | hsl(165, 100%, 40%) |
| OKLCH | oklch(75% 0.154 166.9) |
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 #00CC99 | 2.07:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #00CC99 | 10.09:1 | AAA | Lc 64.0 | Content text, not long reading |
| #00CC99 text on white | 2.07:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #00CC99 text on black | 10.09:1 | AAA | Lc -62.4 | Content text, not long reading |
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
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#D9F0E6
oklch(93.5% 0.028 167.8)
-
Step 200
200
#B8E5D2
oklch(88.5% 0.053 167.5)
-
Step 300
300
#80D5B3
oklch(80.9% 0.097 166.5)
-
Step 400
400 (this color)
#00CC99
oklch(75% 0.154 166.9)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#00CC99 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) | #C7BD96 | 0.153 |
| Deuteranopia (no green cones) | #B2AE9C | 0.147 |
| Tritanopia (no blue cones) | #00CDBE | 0.052 |
| Achromatopsia (no color) | #B4B4B4 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00CC99
#00CC99
oklch(75% 0.154 166.9)
- #F283C1
#F283C1
oklch(75% 0.153 346.8)
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 #00CC99, closest first.
No curated palette has a color within ΔE 0.04 of #00CC99.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.024
- Emerald #06D6A0 ΔE 0.028
- Green Blue #01C08D ΔE 0.034
- Seaweed #18D17B ΔE 0.046
- Dark Mint #48C072 ΔE 0.050
- Dark Mint Green #20C073 ΔE 0.051
- Medium Aquamarine #66CDAA ΔE 0.052
- Algae Green #21C36F ΔE 0.052
Use #00CC99 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.