#488BD1

Closest named color: Dark Sky Blue (#448EE4). oklch(62.5% 0.126 251.4), rgb(72, 139, 209).

Black text reads best on this color (5.88:1).

About this color

#488BD1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.126 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 5.88:1.

Hue family	Blues
Lightness	medium-light (62%)
Chroma	moderately saturated (0.126)
Temperature	cool
Nearest name	Dark Sky Blue (#448EE4)
Black text	5.88:1
White text	3.56:1

Values

HEX	#488BD1
RGB	rgb(72, 139, 209)
HSL	hsl(211, 60%, 55%)
OKLCH	oklch(62.5% 0.126 251.4)

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 #488BD1	3.56:1	AA large text	Lc -68.5	Content text, not long reading
Black text on #488BD1	5.88:1	AA	Lc 41.1	Non-text elements, placeholder text
#488BD1 text on white	3.56:1	AA large text	Lc 63.0	Content text, not long reading
#488BD1 text on black	5.88:1	AA	Lc -38.7	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

#F1F6FB

oklch(97.1% 0.009 247.9)
Step 100
100

#E1EBF6

oklch(93.6% 0.018 250.6)
Step 200
200

#C9DBF0

oklch(88.4% 0.035 252.3)
Step 300
300

#A4C4E8

oklch(80.9% 0.062 251.6)
Step 400
400

#71A5DD

oklch(70.8% 0.099 251.1)
Step 500
500 (this color)

#488BD1

oklch(62.5% 0.126 251.4)
Step 600
600

#2976C0

oklch(55.6% 0.137 251.1)
Step 700
700

#1B62A6

oklch(49% 0.128 251.7)
Step 800
800

#1A5186

oklch(42.8% 0.105 251.1)
Step 900
900

#1C436C

oklch(37.7% 0.083 251.9)
Step 950
950

#11283F

oklch(27.1% 0.052 250.3)

Export this scale for Tailwind in the Tailwind colors tool

#488BD1 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)	#6C8FD4	0.040
Deuteranopia (no green cones)	#5982D0	0.027
Tritanopia (no blue cones)	#009BA4	0.099
Achromatopsia (no color)	#888888	0.126