#63AEC7
Closest named color: Greyblue (#77A1B5). oklch(71.2% 0.083 221.7), rgb(99, 174, 199).
Aa
Black text reads best on this color (8.40:1).
About this color
#63AEC7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.083 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.040 away. Black text reads best on it, at 8.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #63AEC7 |
| RGB | rgb(99, 174, 199) |
| HSL | hsl(195, 47%, 58%) |
| OKLCH | oklch(71.2% 0.083 221.7) |
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 #63AEC7 | 2.49:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #63AEC7 | 8.40:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #63AEC7 text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #63AEC7 text on black | 8.40:1 | AAA | Lc -53.1 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C5DEE7
oklch(88.5% 0.029 221.4)
-
Step 300
300
#9CC9D9
oklch(80.9% 0.052 221.7)
-
Step 400
400 (this color)
#63AEC7
oklch(71.2% 0.083 221.7)
-
Step 500
500
#2797B7
oklch(63% 0.106 222)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#01495C
oklch(37.6% 0.07 222.8)
-
Step 950
950
#072B36
oklch(27% 0.044 222.7)
#63AEC7 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) | #9FAAC8 | 0.068 |
| Deuteranopia (no green cones) | #909FC7 | 0.061 |
| Tritanopia (no blue cones) | #29B6B6 | 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°).
- #63AEC7
#63AEC7
oklch(71.2% 0.083 221.7)
- #CF9179
#CF9179
oklch(71.2% 0.083 42)
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 #63AEC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.040
- Turquoise Blue #06B1C4 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.054
- Cool Steel #97A7B3 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.064
- Light Sea Green #20B2AA ΔE 0.066
- Cool Grey #95A3A6 ΔE 0.067
Use #63AEC7 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.