#63AEC6
Closest named color: Greyblue (#77A1B5). oklch(71.1% 0.082 220.8), rgb(99, 174, 198).
Aa
Black text reads best on this color (8.40:1).
About this color
#63AEC6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.082 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.039 away. Black text reads best on it, at 8.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #63AEC6 |
| RGB | rgb(99, 174, 198) |
| HSL | hsl(195, 46%, 58%) |
| OKLCH | oklch(71.1% 0.082 220.8) |
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 #63AEC6 | 2.49:1 | Fails | Lc -54.0 | Large or bold text, headings |
| Black text on #63AEC6 | 8.40:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #63AEC6 text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #63AEC6 text on black | 8.40:1 | AAA | Lc -53.0 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE6
oklch(88.5% 0.028 219.8)
-
Step 300
300
#9CC9D8
oklch(80.9% 0.052 220.3)
-
Step 400
400 (this color)
#63AEC6
oklch(71.1% 0.082 220.8)
-
Step 500
500
#2798B6
oklch(63.2% 0.105 220.4)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#01495B
oklch(37.6% 0.069 221.5)
-
Step 950
950
#072B35
oklch(26.9% 0.043 220.5)
#63AEC6 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) | #9FAAC7 | 0.068 |
| Deuteranopia (no green cones) | #919FC6 | 0.062 |
| Tritanopia (no blue cones) | #2AB6B5 | 0.054 |
| Achromatopsia (no color) | #A4A4A4 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AEC6
#63AEC6
oklch(71.1% 0.082 220.8)
- #CF917A
#CF917A
oklch(71.2% 0.083 41.2)
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 #63AEC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.039
- Turquoise Blue #06B1C4 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.045
- Bluey Grey #89A0B0 ΔE 0.053
- Cool Steel #97A7B3 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.063
- Light Sea Green #20B2AA ΔE 0.065
- Cool Grey #95A3A6 ΔE 0.066
Use #63AEC6 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.