#579DAF

Closest named color: Cadet Blue (#5F9EA0). oklch(65.7% 0.075 216.4), rgb(87, 157, 175).

Black text reads best on this color (6.84:1).

About this color

#579DAF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.075 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.024 away. Black text reads best on it, at 6.84:1.

Hue family	Teals and cyans
Lightness	medium-light (66%)
Chroma	moderately saturated (0.075)
Temperature	cool
Nearest name	Cadet Blue (#5F9EA0)
Black text	6.84:1
White text	3.06:1

Values

HEX	#579DAF
RGB	rgb(87, 157, 175)
HSL	hsl(192, 35%, 51%)
OKLCH	oklch(65.7% 0.075 216.4)

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 #579DAF	3.06:1	AA large text	Lc -62.8	Content text, not long reading
Black text on #579DAF	6.84:1	AA	Lc 46.6	Large or bold text, headings
#579DAF text on white	3.06:1	AA large text	Lc 57.4	Large or bold text, headings
#579DAF text on black	6.84:1	AA	Lc -44.3	Non-text elements, placeholder text

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 500.

Step 50
50

#F2F6F7

oklch(97% 0.004 214.3)
Step 100
100

#E2ECEE

oklch(93.6% 0.011 211)
Step 200
200

#CBDDE2

oklch(88.6% 0.021 216.2)
Step 300
300

#A7C7D0

oklch(80.9% 0.037 216.6)
Step 400
400

#76AAB8

oklch(70.6% 0.058 216.4)
Step 500
500 (this color)

#579DAF

oklch(65.7% 0.075 216.4)
Step 600
600

#2E7F92

oklch(55.6% 0.082 216.3)
Step 700
700

#206B7C

oklch(49% 0.076 216.2)
Step 800
800

#1D5765

oklch(42.6% 0.063 216.9)
Step 900
900

#1F4852

oklch(37.7% 0.049 216)
Step 950
950

#132A30

oklch(26.9% 0.031 216.7)

Export this scale for Tailwind in the Tailwind colors tool

#579DAF 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)	#9199B0	0.067
Deuteranopia (no green cones)	#838FAF	0.060
Tritanopia (no blue cones)	#23A4A3	0.045
Achromatopsia (no color)	#939393	0.076