#63ADBA
Closest named color: Greyblue (#77A1B5). oklch(70.4% 0.076 210), rgb(99, 173, 186).
Aa
Black text reads best on this color (8.21:1).
About this color
#63ADBA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.076 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.036 away. Black text reads best on it, at 8.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.21:1 |
| White text | 2.55:1 |
Values
| HEX | #63ADBA |
| RGB | rgb(99, 173, 186) |
| HSL | hsl(189, 39%, 56%) |
| OKLCH | oklch(70.4% 0.076 210) |
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 #63ADBA | 2.55:1 | Fails | Lc -55.0 | Large or bold text, headings |
| Black text on #63ADBA | 8.21:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #63ADBA text on white | 2.55:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #63ADBA text on black | 8.21:1 | AAA | Lc -52.0 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDEF
oklch(93.7% 0.014 207.9)
-
Step 200
200
#C6DEE3
oklch(88.4% 0.026 211.6)
-
Step 300
300
#9ECAD2
oklch(81% 0.048 209.9)
-
Step 400
400 (this color)
#63ADBA
oklch(70.4% 0.076 210)
-
Step 500
500
#2C99AA
oklch(63.1% 0.097 210.3)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#044A54
oklch(37.6% 0.063 210.5)
-
Step 950
950
#082C31
oklch(27.1% 0.04 208.4)
#63ADBA 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) | #A1A8BB | 0.072 |
| Deuteranopia (no green cones) | #939DBA | 0.067 |
| Tritanopia (no blue cones) | #36B3B1 | 0.040 |
| Achromatopsia (no color) | #A2A2A2 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63ADBA
#63ADBA
oklch(70.4% 0.076 210)
- #CB8E84
#CB8E84
oklch(70.4% 0.076 29.5)
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 #63ADBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.036
- Bluegrey #85A3B2 ΔE 0.041
- Turquoise Blue #06B1C4 ΔE 0.044
- Bluey Grey #89A0B0 ΔE 0.049
- Cadet Blue #5F9EA0 ΔE 0.050
- Light Sea Green #20B2AA ΔE 0.053
- Cool Steel #97A7B3 ΔE 0.058
- Cool Grey #95A3A6 ΔE 0.060
Use #63ADBA 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.