#63BBC0
Closest named color: Topaz (#13BBAF). oklch(73.9% 0.085 200.3), rgb(99, 187, 192).
Aa
Black text reads best on this color (9.39:1).
About this color
#63BBC0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.085 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.051 away. Black text reads best on it, at 9.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #63BBC0 |
| RGB | rgb(99, 187, 192) |
| HSL | hsl(183, 42%, 57%) |
| OKLCH | oklch(73.9% 0.085 200.3) |
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 #63BBC0 | 2.23:1 | Fails | Lc -48.6 | Large or bold text, headings |
| Black text on #63BBC0 | 9.39:1 | AAA | Lc 60.1 | Content text, not long reading |
| #63BBC0 text on white | 2.23:1 | Fails | Lc 43.9 | Non-text elements, placeholder text |
| #63BBC0 text on black | 9.39:1 | AAA | Lc -58.3 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C4DFE1
oklch(88.4% 0.029 202.1)
-
Step 300
300
#98CBCE
oklch(80.8% 0.053 200.7)
-
Step 400
400 (this color)
#63BBC0
oklch(73.9% 0.085 200.3)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#012D2F
oklch(27% 0.045 199.5)
#63BBC0 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) | #B0B4C0 | 0.087 |
| Deuteranopia (no green cones) | #A0A8C1 | 0.081 |
| Tritanopia (no blue cones) | #2BC1BC | 0.037 |
| Achromatopsia (no color) | #ADADAD | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BBC0
#63BBC0
oklch(73.9% 0.085 200.3)
- #DB9594
#DB9594
oklch(73.9% 0.085 20.2)
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 #63BBC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.051
- Turquoise Blue #06B1C4 ΔE 0.057
- Dark Turquoise #00CED1 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.059
- Light Sea Green #20B2AA ΔE 0.060
- Pale Teal #82CBB2 ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.068
- Muted Teal #90B494 ΔE 0.068
Use #63BBC0 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.