#63B778
Closest named color: Boring Green (#63B365). oklch(71% 0.123 150.3), rgb(99, 183, 120).
Aa
Black text reads best on this color (8.57:1).
About this color
#63B778 is a medium-light, moderately saturated green. In OKLCH its lightness is 71%, its chroma 0.123 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.023 away. Black text reads best on it, at 8.57:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 8.57:1 |
| White text | 2.44:1 |
Values
| HEX | #63B778 |
| RGB | rgb(99, 183, 120) |
| HSL | hsl(135, 37%, 55%) |
| OKLCH | oklch(71% 0.123 150.3) |
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 #63B778 | 2.44:1 | Fails | Lc -53.0 | Large or bold text, headings |
| Black text on #63B778 | 8.57:1 | AAA | Lc 56.0 | Large or bold text, headings |
| #63B778 text on white | 2.44:1 | Fails | Lc 48.0 | Large or bold text, headings |
| #63B778 text on black | 8.57:1 | AAA | Lc -54.0 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE2
oklch(93.5% 0.022 149.7)
-
Step 200
200
#C6E2CB
oklch(88.6% 0.043 150.5)
-
Step 300
300
#9DCFA7
oklch(80.9% 0.077 150.5)
-
Step 400
400 (this color)
#63B778
oklch(71% 0.123 150.3)
-
Step 500
500
#27A353
oklch(63.1% 0.158 150.3)
-
Step 600
600
#008B40
oklch(55.7% 0.152 150.4)
-
Step 700
700
#007534
oklch(49.2% 0.135 150.2)
-
Step 800
800
#00602A
oklch(42.8% 0.117 150.4)
-
Step 900
900
#005022
oklch(37.7% 0.103 150.5)
-
Step 950
950
#072F14
oklch(27% 0.066 150.1)
#63B778 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) | #B8AB74 | 0.104 |
| Deuteranopia (no green cones) | #ACA27C | 0.103 |
| Tritanopia (no blue cones) | #53B4A7 | 0.069 |
| Achromatopsia (no color) | #A5A5A5 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B778
#63B778
oklch(71% 0.123 150.3)
- #CD84C6
#CD84C6
oklch(71% 0.124 330.2)
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 #63B778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.023
- Faded Green #7BB274 ΔE 0.025
- Dark Mint #48C072 ΔE 0.035
- Medium Sea Green #3CB371 ΔE 0.035
- Soft Green #6FC276 ΔE 0.036
- Tea #65AB7C ΔE 0.037
- Algae #54AC68 ΔE 0.038
- Sage Green #88B378 ΔE 0.039
Use #63B778 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.