#63B6BF
Closest named color: Turquoise Blue (#06B1C4). oklch(72.7% 0.082 204.7), rgb(99, 182, 191).
Aa
Black text reads best on this color (8.97:1).
About this color
#63B6BF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.082 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.049 away. Black text reads best on it, at 8.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.97:1 |
| White text | 2.34:1 |
Values
| HEX | #63B6BF |
| RGB | rgb(99, 182, 191) |
| HSL | hsl(186, 42%, 57%) |
| OKLCH | oklch(72.7% 0.082 204.7) |
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 #63B6BF | 2.34:1 | Fails | Lc -50.9 | Large or bold text, headings |
| Black text on #63B6BF | 8.97:1 | AAA | Lc 58.0 | Large or bold text, headings |
| #63B6BF text on white | 2.34:1 | Fails | Lc 46.0 | Large or bold text, headings |
| #63B6BF text on black | 8.97:1 | AAA | Lc -56.1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C4DFE2
oklch(88.5% 0.029 204.8)
-
Step 300
300
#9ACBD0
oklch(80.9% 0.052 204)
-
Step 400
400 (this color)
#63B6BF
oklch(72.7% 0.082 204.7)
-
Step 500
500
#149BA7
oklch(63% 0.104 204.8)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#042C30
oklch(26.9% 0.043 205)
#63B6BF 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) | #ABB0C0 | 0.082 |
| Deuteranopia (no green cones) | #9BA5BF | 0.074 |
| Tritanopia (no blue cones) | #2EBCB9 | 0.039 |
| Achromatopsia (no color) | #A9A9A9 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B6BF
#63B6BF
oklch(72.7% 0.082 204.7)
- #D6938D
#D6938D
oklch(72.8% 0.082 25)
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 #63B6BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.049
- Topaz #13BBAF ΔE 0.053
- Light Sea Green #20B2AA ΔE 0.055
- Bluegrey #85A3B2 ΔE 0.057
- Greyblue #77A1B5 ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.064
- Pewter #96A8A1 ΔE 0.066
- Bluey Grey #89A0B0 ΔE 0.066
Use #63B6BF 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.