#63B997
Closest named color: Greeny Blue (#42B395). oklch(72.2% 0.098 166), rgb(99, 185, 151).
Aa
Black text reads best on this color (8.91:1).
About this color
#63B997 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.098 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.033 away. Black text reads best on it, at 8.91:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.91:1 |
| White text | 2.35:1 |
Values
| HEX | #63B997 |
| RGB | rgb(99, 185, 151) |
| HSL | hsl(156, 38%, 56%) |
| OKLCH | oklch(72.2% 0.098 166) |
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 #63B997 | 2.35:1 | Fails | Lc -51.2 | Large or bold text, headings |
| Black text on #63B997 | 8.91:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #63B997 text on white | 2.35:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #63B997 text on black | 8.91:1 | AAA | Lc -55.8 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#DFEEE7
oklch(93.6% 0.018 166.4)
-
Step 200
200
#C5E1D4
oklch(88.6% 0.035 165.9)
-
Step 300
300
#9BCEB7
oklch(80.9% 0.062 165.4)
-
Step 400
400 (this color)
#63B997
oklch(72.2% 0.098 166)
-
Step 500
500
#19A178
oklch(63.1% 0.125 166.1)
-
Step 600
600
#008863
oklch(55.6% 0.116 165.8)
-
Step 700
700
#007253
oklch(49% 0.101 166.2)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#052E20
oklch(26.9% 0.052 165.4)
#63B997 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) | #B6AF95 | 0.098 |
| Deuteranopia (no green cones) | #A8A599 | 0.094 |
| Tritanopia (no blue cones) | #48B9AF | 0.037 |
| Achromatopsia (no color) | #A9A9A9 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B997
#63B997
oklch(72.2% 0.098 166)
- #D28CB2
#D28CB2
oklch(72.2% 0.098 346.1)
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 #63B997, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.033
- Faded Green #7BB274 ΔE 0.045
- Tea #65AB7C ΔE 0.045
- Topaz #13BBAF ΔE 0.047
- Muted Teal #90B494 ΔE 0.047
- Dark Sea Green #8FBC8F ΔE 0.047
- Sage Green #88B378 ΔE 0.048
- Green Blue #01C08D ΔE 0.051
Use #63B997 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.