#63BBC3
Closest named color: Topaz (#13BBAF). oklch(74% 0.085 203.2), rgb(99, 187, 195).
Aa
Black text reads best on this color (9.42:1).
About this color
#63BBC3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.085 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.054 away. Black text reads best on it, at 9.42:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.42:1 |
| White text | 2.22:1 |
Values
| HEX | #63BBC3 |
| RGB | rgb(99, 187, 195) |
| HSL | hsl(185, 44%, 58%) |
| OKLCH | oklch(74% 0.085 203.2) |
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 #63BBC3 | 2.22:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #63BBC3 | 9.42:1 | AAA | Lc 60.2 | Content text, not long reading |
| #63BBC3 text on white | 2.22:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #63BBC3 text on black | 9.42:1 | AAA | Lc -58.4 | 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
#C4DFE2
oklch(88.5% 0.029 204.8)
-
Step 300
300
#98CBD0
oklch(80.8% 0.053 203.7)
-
Step 400
400 (this color)
#63BBC3
oklch(74% 0.085 203.2)
-
Step 500
500
#009CA6
oklch(63.1% 0.107 202.8)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#012D30
oklch(27.1% 0.045 201.9)
#63BBC3 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) | #AFB4C4 | 0.086 |
| Deuteranopia (no green cones) | #9FA9C3 | 0.078 |
| Tritanopia (no blue cones) | #28C1BD | 0.039 |
| Achromatopsia (no color) | #AEAEAE | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BBC3
#63BBC3
oklch(74% 0.085 203.2)
- #DC9691
#DC9691
oklch(74.1% 0.085 23.9)
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 #63BBC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.054
- Turquoise Blue #06B1C4 ΔE 0.056
- Dark Turquoise #00CED1 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.059
- Light Sea Green #20B2AA ΔE 0.062
- Vivid Sky Blue #4CC9F0 ΔE 0.065
- Pale Teal #82CBB2 ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.068
Use #63BBC3 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.