#508AC3

Closest named color: Cool Blue (#4984B8). oklch(61.9% 0.106 249.5), rgb(80, 138, 195).

Black text reads best on this color (5.76:1).

About this color

#508AC3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.106 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.024 away. Black text reads best on it, at 5.76:1.

Hue family	Blues
Lightness	medium-dark (62%)
Chroma	moderately saturated (0.106)
Temperature	cool
Nearest name	Cool Blue (#4984B8)
Black text	5.76:1
White text	3.64:1

Values

HEX	#508AC3
RGB	rgb(80, 138, 195)
HSL	hsl(210, 49%, 54%)
OKLCH	oklch(61.9% 0.106 249.5)

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 #508AC3	3.64:1	AA large text	Lc -69.3	Content text, not long reading
Black text on #508AC3	5.76:1	AA	Lc 40.2	Non-text elements, placeholder text
#508AC3 text on white	3.64:1	AA large text	Lc 63.8	Content text, not long reading
#508AC3 text on black	5.76:1	AA	Lc -37.8	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

#F2F6FA

oklch(97.1% 0.007 247.9)
Step 100
100

#E3EBF4

oklch(93.7% 0.015 251.2)
Step 200
200

#CBDBEC

oklch(88.5% 0.029 249.8)
Step 300
300

#A8C4E1

oklch(80.9% 0.051 249.4)
Step 400
400

#78A5D3

oklch(70.7% 0.083 249.6)
Step 500
500 (this color)

#508AC3

oklch(61.9% 0.106 249.5)
Step 600
600

#3777B4

oklch(55.6% 0.116 249.7)
Step 700
700

#29649B

oklch(49.2% 0.107 249.6)
Step 800
800

#23527D

oklch(42.8% 0.088 248.9)
Step 900
900

#224465

oklch(37.7% 0.069 249.5)
Step 950
950

#15283B

oklch(27.1% 0.044 249.7)

Export this scale for Tailwind in the Tailwind colors tool

#508AC3 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)	#728CC6	0.040
Deuteranopia (no green cones)	#6381C2	0.030
Tritanopia (no blue cones)	#00979E	0.087
Achromatopsia (no color)	#868686	0.106