#63B8CD
Closest named color: Turquoise Blue (#06B1C4). oklch(73.7% 0.088 215.8), rgb(99, 184, 205).
Aa
Black text reads best on this color (9.26:1).
About this color
#63B8CD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.088 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.053 away. Black text reads best on it, at 9.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.26:1 |
| White text | 2.26:1 |
Values
| HEX | #63B8CD |
| RGB | rgb(99, 184, 205) |
| HSL | hsl(192, 51%, 60%) |
| OKLCH | oklch(73.7% 0.088 215.8) |
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 #63B8CD | 2.26:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #63B8CD | 9.26:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #63B8CD text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #63B8CD text on black | 9.26:1 | AAA | Lc -57.6 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF1
oklch(93.7% 0.016 216.7)
-
Step 200
200
#C4DFE6
oklch(88.6% 0.03 215.1)
-
Step 300
300
#99CAD7
oklch(80.9% 0.054 215.9)
-
Step 400
400 (this color)
#63B8CD
oklch(73.7% 0.088 215.8)
-
Step 500
500
#009AB4
oklch(63.2% 0.112 215.3)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#022C35
oklch(27.1% 0.046 216)
#63B8CD 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) | #A9B3CE | 0.078 |
| Deuteranopia (no green cones) | #99A7CD | 0.071 |
| Tritanopia (no blue cones) | #1BC0BE | 0.053 |
| Achromatopsia (no color) | #ACACAC | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B8CD
#63B8CD
oklch(73.7% 0.088 215.8)
- #DB9684
#DB9684
oklch(73.7% 0.088 35.2)
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 #63B8CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.053
- Vivid Sky Blue #4CC9F0 ΔE 0.058
- Greyblue #77A1B5 ΔE 0.063
- Bluegrey #85A3B2 ΔE 0.063
- Light Grey Blue #9DBCD4 ΔE 0.065
- Light Cornflower Blue #98C1D9 ΔE 0.065
- Dark Turquoise #00CED1 ΔE 0.066
- Topaz #13BBAF ΔE 0.067
Use #63B8CD 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.