#63B8AF
Closest named color: Topaz (#13BBAF). oklch(72.7% 0.084 186.6), rgb(99, 184, 175).
Aa
Black text reads best on this color (9.00:1).
About this color
#63B8AF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.084 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.040 away. Black text reads best on it, at 9.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.00:1 |
| White text | 2.33:1 |
Values
| HEX | #63B8AF |
| RGB | rgb(99, 184, 175) |
| HSL | hsl(174, 37%, 55%) |
| OKLCH | oklch(72.7% 0.084 186.6) |
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 #63B8AF | 2.33:1 | Fails | Lc -50.7 | Large or bold text, headings |
| Black text on #63B8AF | 9.00:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #63B8AF text on white | 2.33:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #63B8AF text on black | 9.00:1 | AAA | Lc -56.2 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#DFEDEB
oklch(93.5% 0.015 186.7)
-
Step 200
200
#C5E0DC
oklch(88.6% 0.029 185.9)
-
Step 300
300
#9ACCC6
oklch(80.8% 0.053 187)
-
Step 400
400 (this color)
#63B8AF
oklch(72.7% 0.084 186.6)
-
Step 500
500
#139E94
oklch(63.1% 0.107 186.8)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#042D2A
oklch(26.9% 0.044 187.6)
#63B8AF 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) | #B0B0AF | 0.089 |
| Deuteranopia (no green cones) | #A2A5B0 | 0.085 |
| Tritanopia (no blue cones) | #3BBBB5 | 0.026 |
| Achromatopsia (no color) | #AAAAAA | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B8AF
#63B8AF
oklch(72.7% 0.084 186.6)
- #D5919E
#D5919E
oklch(72.8% 0.084 6.8)
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 #63B8AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.047
- Greeny Blue #42B395 ΔE 0.049
- Muted Teal #90B494 ΔE 0.053
- Turquoise Blue #06B1C4 ΔE 0.060
- Dark Sea Green #8FBC8F ΔE 0.063
- Medium Aquamarine #66CDAA ΔE 0.064
- Pewter #96A8A1 ΔE 0.064
Use #63B8AF 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.