#519CBA

Closest named color: Cadet Blue (#5F9EA0). oklch(65.6% 0.087 226.5), rgb(81, 156, 186).

Black text reads best on this color (6.81:1).

About this color

#519CBA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.087 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.043 away. Black text reads best on it, at 6.81:1.

Hue family	Teals and cyans
Lightness	medium-light (66%)
Chroma	moderately saturated (0.087)
Temperature	cool
Nearest name	Cadet Blue (#5F9EA0)
Black text	6.81:1
White text	3.08:1

Values

HEX	#519CBA
RGB	rgb(81, 156, 186)
HSL	hsl(197, 43%, 52%)
OKLCH	oklch(65.6% 0.087 226.5)

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 #519CBA	3.08:1	AA large text	Lc -62.9	Content text, not long reading
Black text on #519CBA	6.81:1	AA	Lc 46.5	Large or bold text, headings
#519CBA text on white	3.08:1	AA large text	Lc 57.6	Large or bold text, headings
#519CBA text on black	6.81:1	AA	Lc -44.2	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

#F2F6F8

oklch(97.1% 0.005 228.8)
Step 100
100

#E2ECF0

oklch(93.7% 0.012 223.5)
Step 200
200

#CADDE5

oklch(88.6% 0.023 224.9)
Step 300
300

#A5C7D6

oklch(81% 0.042 226.4)
Step 400
400

#72AAC1

oklch(70.8% 0.067 225.7)
Step 500
500 (this color)

#519CBA

oklch(65.6% 0.087 226.5)
Step 600
600

#257E9E

oklch(55.6% 0.095 226.8)
Step 700
700

#156A87

oklch(49.1% 0.088 226.9)
Step 800
800

#16576D

oklch(42.8% 0.072 225.4)
Step 900
900

#1B4859

oklch(37.8% 0.057 226.2)
Step 950
950

#112A34

oklch(27% 0.036 226.6)

Export this scale for Tailwind in the Tailwind colors tool

#519CBA 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)	#8C99BC	0.066
Deuteranopia (no green cones)	#7D8EBA	0.058
Tritanopia (no blue cones)	#00A5A6	0.058
Achromatopsia (no color)	#939393	0.087