#3891C7

Closest named color: Cool Blue (#4984B8). oklch(62.8% 0.117 239.3), rgb(56, 145, 199).

Black text reads best on this color (6.04:1).

About this color

#3891C7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.117 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.038 away. Black text reads best on it, at 6.04:1.

Hue family	Blues
Lightness	medium-light (63%)
Chroma	moderately saturated (0.117)
Temperature	cool
Nearest name	Cool Blue (#4984B8)
Black text	6.04:1
White text	3.47:1

Values

HEX	#3891C7
RGB	rgb(56, 145, 199)
HSL	hsl(203, 56%, 50%)
OKLCH	oklch(62.8% 0.117 239.3)

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 #3891C7	3.47:1	AA large text	Lc -67.5	Content text, not long reading
Black text on #3891C7	6.04:1	AA	Lc 42.1	Non-text elements, placeholder text
#3891C7 text on white	3.47:1	AA large text	Lc 62.0	Content text, not long reading
#3891C7 text on black	6.04:1	AA	Lc -39.7	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

#F1F6FA

oklch(97.1% 0.008 241.7)
Step 100
100

#E0ECF4

oklch(93.6% 0.017 236.7)
Step 200
200

#C7DDEC

oklch(88.6% 0.031 237.6)
Step 300
300

#A0C6E2

oklch(80.8% 0.057 240.3)
Step 400
400

#69A9D4

oklch(70.8% 0.091 239.3)
Step 500
500 (this color)

#3891C7

oklch(62.8% 0.117 239.3)
Step 600
600

#007BB5

oklch(55.6% 0.127 239.8)
Step 700
700

#006899

oklch(49.2% 0.111 239.3)
Step 800
800

#00557E

oklch(42.8% 0.097 239.2)
Step 900
900

#104665

oklch(37.6% 0.076 239.3)
Step 950
950

#0C293B

oklch(26.9% 0.048 239.4)

Export this scale for Tailwind in the Tailwind colors tool

#3891C7 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)	#7891C9	0.063
Deuteranopia (no green cones)	#6483C6	0.051
Tritanopia (no blue cones)	#009FA4	0.079
Achromatopsia (no color)	#8A8A8A	0.117