#63BFAB

Closest named color: Medium Aquamarine (#66CDAA). oklch(74.2% 0.093 177.6), rgb(99, 191, 171).

Black text reads best on this color (9.57:1).

About this color

#63BFAB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.093 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.041 away. Black text reads best on it, at 9.57:1.

Hue family	Teals and cyans
Lightness	medium-light (74%)
Chroma	moderately saturated (0.093)
Temperature	cool
Nearest name	Medium Aquamarine (#66CDAA)
Black text	9.57:1
White text	2.19:1

Values

HEX	#63BFAB
RGB	rgb(99, 191, 171)
HSL	hsl(167, 42%, 57%)
OKLCH	oklch(74.2% 0.093 177.6)

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 #63BFAB	2.19:1	Fails	Lc -47.7	Large or bold text, headings
Black text on #63BFAB	9.57:1	AAA	Lc 61.0	Content text, not long reading
#63BFAB text on white	2.19:1	Fails	Lc 43.0	Non-text elements, placeholder text
#63BFAB text on black	9.57:1	AAA	Lc -59.2	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

#F0F7F5

oklch(97% 0.008 177.3)
Step 100
100

#DFEEEA

oklch(93.7% 0.017 178.3)
Step 200
200

#C4E1D9

oklch(88.6% 0.033 177.1)
Step 300
300

#98CDC0

oklch(80.8% 0.058 177.9)
Step 400
400 (this color)

#63BFAB

oklch(74.2% 0.093 177.6)
Step 500
500

#00A089

oklch(63.1% 0.116 177.6)
Step 600
600

#008673

oklch(55.5% 0.102 178.1)
Step 700
700

#007160

oklch(49.1% 0.091 177.4)
Step 800
800

#005D4F

oklch(42.8% 0.079 177.8)
Step 900
900

#004D41

oklch(37.6% 0.069 177.7)
Step 950
950

#012E26

oklch(27% 0.049 177.3)

Export this scale for Tailwind in the Tailwind colors tool

#63BFAB 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)	#B9B5AA	0.099
Deuteranopia (no green cones)	#AAABAD	0.093
Tritanopia (no blue cones)	#3BC1B9	0.029
Achromatopsia (no color)	#AFAFAF	0.094