#63CF7B
Closest named color: Seaweed (#18D17B). oklch(77% 0.156 148.9), rgb(99, 207, 123).
Aa
Black text reads best on this color (10.74:1).
About this color
#63CF7B is a medium-light, vivid green. In OKLCH its lightness is 77%, its chroma 0.156 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.035 away. Black text reads best on it, at 10.74:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.74:1 |
| White text | 1.95:1 |
Values
| HEX | #63CF7B |
| RGB | rgb(99, 207, 123) |
| HSL | hsl(133, 53%, 60%) |
| OKLCH | oklch(77% 0.156 148.9) |
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 #63CF7B | 1.95:1 | Fails | Lc -41.7 | Non-text elements, placeholder text |
| Black text on #63CF7B | 10.74:1 | AAA | Lc 66.6 | Content text, not long reading |
| #63CF7B text on white | 1.95:1 | Fails | Lc 37.3 | Non-text elements, placeholder text |
| #63CF7B text on black | 10.74:1 | AAA | Lc -65.1 | 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 300.
-
Step 50
50
#ECFAEE
oklch(97.1% 0.022 149.7)
-
Step 100
100
#D6F3DA
oklch(93.6% 0.045 149.2)
-
Step 200
200
#B2EABA
oklch(88.6% 0.087 148.7)
-
Step 300
300 (this color)
#63CF7B
oklch(77% 0.156 148.9)
-
Step 400
400
#00C153
oklch(70.8% 0.2 148.9)
-
Step 500
500
#00A546
oklch(63% 0.178 148.9)
-
Step 600
600
#008B3A
oklch(55.6% 0.157 148.9)
-
Step 700
700
#00752F
oklch(49.1% 0.139 148.8)
-
Step 800
800
#006026
oklch(42.7% 0.12 149)
-
Step 900
900
#00501E
oklch(37.6% 0.107 148.8)
-
Step 950
950
#00300F
oklch(27% 0.076 148.8)
#63CF7B 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) | #D1C075 | 0.128 |
| Deuteranopia (no green cones) | #C2B580 | 0.126 |
| Tritanopia (no blue cones) | #4DCBBA | 0.088 |
| Achromatopsia (no color) | #B9B9B9 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63CF7B
#63CF7B
oklch(77% 0.156 148.9)
- #EA8EE5
#EA8EE5
oklch(77.1% 0.156 328.9)
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 #63CF7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.035
- Soft Green #6FC276 ΔE 0.035
- Emerald #06D6A0 ΔE 0.049
- Dark Mint #48C072 ΔE 0.049
- Aqua Green #12E193 ΔE 0.052
- Algae Green #21C36F ΔE 0.055
- Greenblue #23C48B ΔE 0.056
- Apple #6ECB3C ΔE 0.057
Use #63CF7B 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.