#63ACC6
Closest named color: Greyblue (#77A1B5). oklch(70.7% 0.082 223.2), rgb(99, 172, 198).
Aa
Black text reads best on this color (8.24:1).
About this color
#63ACC6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.082 and its hue 223°. 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 8.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.24:1 |
| White text | 2.54:1 |
Values
| HEX | #63ACC6 |
| RGB | rgb(99, 172, 198) |
| HSL | hsl(196, 46%, 58%) |
| OKLCH | oklch(70.7% 0.082 223.2) |
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 #63ACC6 | 2.54:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #63ACC6 | 8.24:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #63ACC6 text on white | 2.54:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #63ACC6 text on black | 8.24:1 | AAA | Lc -52.2 | 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
#C6DEE7
oklch(88.6% 0.028 222.3)
-
Step 300
300
#9DC9D9
oklch(81% 0.052 222.1)
-
Step 400
400 (this color)
#63ACC6
oklch(70.7% 0.082 223.2)
-
Step 500
500
#2C97B8
oklch(63.2% 0.105 223.3)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#04495C
oklch(37.7% 0.069 223.2)
-
Step 950
950
#082B36
oklch(27% 0.044 223.1)
#63ACC6 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) | #9DA9C7 | 0.066 |
| Deuteranopia (no green cones) | #8E9DC6 | 0.060 |
| Tritanopia (no blue cones) | #2BB4B4 | 0.055 |
| Achromatopsia (no color) | #A2A2A2 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63ACC6
#63ACC6
oklch(70.7% 0.082 223.2)
- #CD9077
#CD9077
oklch(70.7% 0.083 43.2)
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 #63ACC6, 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 0.044
- Turquoise Blue #06B1C4 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.051
- Cool Steel #97A7B3 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.061
- Cool Gray #8D99AE ΔE 0.065
- Cool Grey #95A3A6 ΔE 0.066
Use #63ACC6 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.