#137B78

Closest named color: Bluegreen (#017A79). oklch(52.9% 0.087 191.7), rgb(19, 123, 120).

White text reads best on this color (5.08:1).

About this color

#137B78 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.087 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.006 away. White text reads best on it, at 5.08:1.

Hue family	Teals and cyans
Lightness	medium-dark (53%)
Chroma	moderately saturated (0.087)
Temperature	cool
Nearest name	Bluegreen (#017A79)
Black text	4.13:1
White text	5.08:1

Values

HEX	#137B78
RGB	rgb(19, 123, 120)
HSL	hsl(178, 73%, 28%)
OKLCH	oklch(52.9% 0.087 191.7)

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 #137B78	5.08:1	AA	Lc -80.1	Fine for body text
Black text on #137B78	4.13:1	AA large text	Lc 29.4	Dividers and decoration only
#137B78 text on white	5.08:1	AA	Lc 74.7	Content text, not long reading
#137B78 text on black	4.13:1	AA large text	Lc -27.1	Dividers and decoration only

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 600.

Step 50
50

#F2F7F6

oklch(97.2% 0.005 183)
Step 100
100

#E2ECEC

oklch(93.6% 0.011 197)
Step 200
200

#CADEDD

oklch(88.5% 0.021 193.1)
Step 300
300

#A5C9C7

oklch(80.9% 0.038 192.3)
Step 400
400

#71ADAA

oklch(70.6% 0.062 191.8)
Step 500
500

#479996

oklch(63.1% 0.08 192.1)
Step 600
600 (this color)

#137B78

oklch(52.9% 0.087 191.7)
Step 700
700

#106F6C

oklch(49.1% 0.081 191.4)
Step 800
800

#135A58

oklch(42.6% 0.067 192.1)
Step 900
900

#1A4A48

oklch(37.6% 0.051 191.4)
Step 950
950

#112C2A

oklch(27.1% 0.033 189)

Export this scale for Tailwind in the Tailwind colors tool

#137B78 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)	#737478	0.091
Deuteranopia (no green cones)	#656A79	0.085
Tritanopia (no blue cones)	#007F7A	0.012
Achromatopsia (no color)	#6E6E6E	0.087