#5F9BBF

Closest named color: Greyblue (#77A1B5). oklch(66.3% 0.082 236.2), rgb(95, 155, 191).

Black text reads best on this color (6.92:1).

About this color

#5F9BBF is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.082 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.037 away. Black text reads best on it, at 6.92:1.

Hue family	Blues
Lightness	medium-light (66%)
Chroma	moderately saturated (0.082)
Temperature	cool
Nearest name	Greyblue (#77A1B5)
Black text	6.92:1
White text	3.03:1

Values

HEX	#5F9BBF
RGB	rgb(95, 155, 191)
HSL	hsl(203, 43%, 56%)
OKLCH	oklch(66.3% 0.082 236.2)

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 #5F9BBF	3.03:1	AA large text	Lc -62.3	Content text, not long reading
Black text on #5F9BBF	6.92:1	AA	Lc 47.1	Large or bold text, headings
#5F9BBF text on white	3.03:1	AA large text	Lc 57.0	Large or bold text, headings
#5F9BBF text on black	6.92:1	AA	Lc -44.8	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

#F2F6F9

oklch(97.1% 0.006 239.8)
Step 100
100

#E3EBF1

oklch(93.6% 0.012 239.9)
Step 200
200

#CCDCE6

oklch(88.5% 0.022 235)
Step 300
300

#A9C5D8

oklch(80.9% 0.041 237.7)
Step 400
400

#7AA7C4

oklch(70.7% 0.064 237.1)
Step 500
500 (this color)

#5F9BBF

oklch(66.3% 0.082 236.2)
Step 600
600

#387BA1

oklch(55.6% 0.09 236.4)
Step 700
700

#2A678A

oklch(49% 0.084 237.2)
Step 800
800

#245470

oklch(42.6% 0.07 237.2)
Step 900
900

#23465A

oklch(37.7% 0.053 235.6)
Step 950
950

#152935

oklch(27% 0.034 236.3)

Export this scale for Tailwind in the Tailwind colors tool

#5F9BBF 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)	#8A9AC1	0.050
Deuteranopia (no green cones)	#7D90BE	0.043
Tritanopia (no blue cones)	#2CA4A7	0.064
Achromatopsia (no color)	#949494	0.082