#63BBA3
Closest named color: Greeny Blue (#42B395). oklch(73% 0.093 173.8), rgb(99, 187, 163).
Aa
Black text reads best on this color (9.16:1).
About this color
#63BBA3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.093 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.040 away. Black text reads best on it, at 9.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 9.16:1 |
| White text | 2.29:1 |
Values
| HEX | #63BBA3 |
| RGB | rgb(99, 187, 163) |
| HSL | hsl(164, 39%, 56%) |
| OKLCH | oklch(73% 0.093 173.8) |
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 #63BBA3 | 2.29:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #63BBA3 | 9.16:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #63BBA3 text on white | 2.29:1 | Fails | Lc 45.0 | Large or bold text, headings |
| #63BBA3 text on black | 9.16:1 | AAA | Lc -57.1 | 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
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DFEEE9
oklch(93.7% 0.017 174)
-
Step 200
200
#C4E0D7
oklch(88.4% 0.032 174.2)
-
Step 300
300
#9ACDBD
oklch(80.8% 0.058 173.5)
-
Step 400
400 (this color)
#63BBA3
oklch(73% 0.093 173.8)
-
Step 500
500
#0BA084
oklch(63.1% 0.118 174.1)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#032E24
oklch(27% 0.049 173)
#63BBA3 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) | #B6B1A2 | 0.097 |
| Deuteranopia (no green cones) | #A8A7A5 | 0.093 |
| Tritanopia (no blue cones) | #41BDB4 | 0.030 |
| Achromatopsia (no color) | #ABABAB | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BBA3
#63BBA3
oklch(73% 0.093 173.8)
- #D68FAC
#D68FAC
oklch(72.9% 0.093 353.5)
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 #63BBA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.040
- Topaz #13BBAF ΔE 0.041
- Muted Teal #90B494 ΔE 0.047
- Dark Sea Green #8FBC8F ΔE 0.050
- Medium Aquamarine #66CDAA ΔE 0.050
- Light Sea Green #20B2AA ΔE 0.052
- Pale Teal #82CBB2 ΔE 0.058
- Tea #65AB7C ΔE 0.059
Use #63BBA3 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.