#588AA9

Closest named color: Dusty Blue (#5A86AD). oklch(61% 0.072 236.8), rgb(88, 138, 169).

Black text reads best on this color (5.62:1).

About this color

#588AA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.072 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.015 away. Black text reads best on it, at 5.62:1.

Hue family	Blues
Lightness	medium-dark (61%)
Chroma	moderately saturated (0.072)
Temperature	cool
Nearest name	Dusty Blue (#5A86AD)
Black text	5.62:1
White text	3.73:1

Values

HEX	#588AA9
RGB	rgb(88, 138, 169)
HSL	hsl(203, 32%, 50%)
OKLCH	oklch(61% 0.072 236.8)

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 #588AA9	3.73:1	AA large text	Lc -70.3	Content text, not long reading
Black text on #588AA9	5.62:1	AA	Lc 39.3	Non-text elements, placeholder text
#588AA9 text on white	3.73:1	AA large text	Lc 64.8	Content text, not long reading
#588AA9 text on black	5.62:1	AA	Lc -36.9	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

#F3F6F8

oklch(97.1% 0.004 236.5)
Step 100
100

#E4EBF0

oklch(93.6% 0.01 238.5)
Step 200
200

#CEDBE5

oklch(88.5% 0.02 240.8)
Step 300
300

#ACC5D5

oklch(81% 0.035 236)
Step 400
400

#80A6BF

oklch(70.6% 0.055 237.4)
Step 500
500 (this color)

#588AA9

oklch(61% 0.072 236.8)
Step 600
600

#437A9B

oklch(55.6% 0.078 236.8)
Step 700
700

#346785

oklch(49.2% 0.073 236.7)
Step 800
800

#2C546C

oklch(42.7% 0.06 236.8)
Step 900
900

#284557

oklch(37.6% 0.047 237.1)
Step 950
950

#182933

oklch(27.1% 0.029 235.2)

Export this scale for Tailwind in the Tailwind colors tool

#588AA9 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)	#7C89AB	0.044
Deuteranopia (no green cones)	#7180A9	0.039
Tritanopia (no blue cones)	#329294	0.056
Achromatopsia (no color)	#848484	0.072