#317B72

Closest named color: Bluegreen (#017A79). oklch(53.4% 0.074 184.3), rgb(49, 123, 114).

White text reads best on this color (4.99:1).

About this color

#317B72 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.074 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.022 away. White text reads best on it, at 4.99:1.

Hue family	Teals and cyans
Lightness	medium-dark (53%)
Chroma	moderately saturated (0.074)
Temperature	cool
Nearest name	Bluegreen (#017A79)
Black text	4.20:1
White text	4.99:1

Values

HEX	#317B72
RGB	rgb(49, 123, 114)
HSL	hsl(173, 43%, 34%)
OKLCH	oklch(53.4% 0.074 184.3)

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 #317B72	4.99:1	AA	Lc -79.7	Fine for body text
Black text on #317B72	4.20:1	AA large text	Lc 29.8	Dividers and decoration only
#317B72 text on white	4.99:1	AA	Lc 74.3	Content text, not long reading
#317B72 text on black	4.20:1	AA large text	Lc -27.4	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

#F2F6F6

oklch(97% 0.004 197.1)
Step 100
100

#E3ECEA

oklch(93.6% 0.01 181.4)
Step 200
200

#CCDDDA

oklch(88.4% 0.019 184.2)
Step 300
300

#AAC8C3

oklch(80.9% 0.033 184.4)
Step 400
400

#7BACA4

oklch(70.7% 0.053 183.6)
Step 500
500

#56978E

oklch(63% 0.068 184.3)
Step 600
600 (this color)

#317B72

oklch(53.4% 0.074 184.3)
Step 700
700

#2A6D65

oklch(49% 0.069 184.5)
Step 800
800

#245953

oklch(42.6% 0.057 185.3)
Step 900
900

#234944

oklch(37.6% 0.044 184.5)
Step 950
950

#152B28

oklch(27% 0.029 184.5)

Export this scale for Tailwind in the Tailwind colors tool

#317B72 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)	#757472	0.079
Deuteranopia (no green cones)	#6A6C73	0.075
Tritanopia (no blue cones)	#007D78	0.019
Achromatopsia (no color)	#6F6F6F	0.075