#63C4B9
Closest named color: Medium Turquoise (#48D1CC). oklch(75.8% 0.093 185.7), rgb(99, 196, 185).
Aa
Black text reads best on this color (10.12:1).
About this color
#63C4B9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.093 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.038 away. Black text reads best on it, at 10.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.12:1 |
| White text | 2.07:1 |
Values
| HEX | #63C4B9 |
| RGB | rgb(99, 196, 185) |
| HSL | hsl(173, 45%, 58%) |
| OKLCH | oklch(75.8% 0.093 185.7) |
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 #63C4B9 | 2.07:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #63C4B9 | 10.12:1 | AAA | Lc 63.6 | Content text, not long reading |
| #63C4B9 text on white | 2.07:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #63C4B9 text on black | 10.12:1 | AAA | Lc -62.0 | 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
#EDF8F7
oklch(97.1% 0.012 190.4)
-
Step 100
100
#D7F0EC
oklch(93.6% 0.027 185.2)
-
Step 200
200
#B3E5DE
oklch(88.5% 0.052 185.7)
-
Step 300
300 (this color)
#63C4B9
oklch(75.8% 0.093 185.7)
-
Step 400
400
#00B9AC
oklch(70.7% 0.124 186)
-
Step 500
500
#009F93
oklch(63.2% 0.111 185.4)
-
Step 600
600
#00857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#63C4B9 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) | #BCBBB9 | 0.100 |
| Deuteranopia (no green cones) | #ACAFBA | 0.094 |
| Tritanopia (no blue cones) | #2EC8C0 | 0.029 |
| Achromatopsia (no color) | #B4B4B4 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C4B9
#63C4B9
oklch(75.8% 0.093 185.7)
- #E498A8
#E498A8
oklch(75.9% 0.093 5.7)
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 #63C4B9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.038
- Pale Teal #82CBB2 ΔE 0.039
- Medium Aquamarine #66CDAA ΔE 0.039
- Seafoam Blue #78D1B6 ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.046
- Topaz #13BBAF ΔE 0.053
- Dark Sea Green #8FBC8F ΔE 0.062
- Muted Teal #90B494 ΔE 0.063
Use #63C4B9 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.