#399DC6

Closest named color: Faded Blue (#658CBB). oklch(65.6% 0.109 229.3), rgb(57, 157, 198).

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

About this color

#399DC6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.109 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.054 away. Black text reads best on it, at 6.81:1.

Hue family	Teals and cyans
Lightness	medium-light (66%)
Chroma	moderately saturated (0.109)
Temperature	cool
Nearest name	Faded Blue (#658CBB)
Black text	6.81:1
White text	3.08:1

Values

HEX	#399DC6
RGB	rgb(57, 157, 198)
HSL	hsl(197, 55%, 50%)
OKLCH	oklch(65.6% 0.109 229.3)

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 #399DC6	3.08:1	AA large text	Lc -62.8	Content text, not long reading
Black text on #399DC6	6.81:1	AA	Lc 46.6	Large or bold text, headings
#399DC6 text on white	3.08:1	AA large text	Lc 57.4	Large or bold text, headings
#399DC6 text on black	6.81:1	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

#F1F6F9

oklch(97% 0.007 233.6)
Step 100
100

#E0ECF2

oklch(93.6% 0.015 229)
Step 200
200

#C6DDE9

oklch(88.4% 0.03 230.3)
Step 300
300

#9EC8DC

oklch(80.9% 0.053 228.6)
Step 400
400

#64ABCB

oklch(70.7% 0.085 228.9)
Step 500
500 (this color)

#399DC6

oklch(65.6% 0.109 229.3)
Step 600
600

#007EA6

oklch(55.5% 0.11 229.3)
Step 700
700

#006A8C

oklch(49% 0.097 229.1)
Step 800
800

#005774

oklch(42.7% 0.085 229.4)
Step 900
900

#074860

oklch(37.7% 0.072 229.9)
Step 950
950

#092A38

oklch(26.9% 0.045 230.2)

Export this scale for Tailwind in the Tailwind colors tool

#399DC6 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)	#889BC8	0.077
Deuteranopia (no green cones)	#758DC5	0.066
Tritanopia (no blue cones)	#00A8AB	0.062
Achromatopsia (no color)	#939393	0.109