#437993

Closest named color: Cerulean (#457B9D). oklch(54.9% 0.07 230.8), rgb(67, 121, 147).

White text reads best on this color (4.77:1).

About this color

#437993 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.070 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.016 away. White text reads best on it, at 4.77:1.

Hue family	Blues
Lightness	medium-dark (55%)
Chroma	moderately saturated (0.070)
Temperature	cool
Nearest name	Cerulean (#457B9D)
Black text	4.39:1
White text	4.77:1

Values

HEX	#437993
RGB	rgb(67, 121, 147)
HSL	hsl(200, 37%, 42%)
OKLCH	oklch(54.9% 0.07 230.8)

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 #437993	4.77:1	AA	Lc -78.5	Fine for body text
Black text on #437993	4.39:1	AA large text	Lc 31.1	Non-text elements, placeholder text
#437993 text on white	4.77:1	AA	Lc 73.0	Content text, not long reading
#437993 text on black	4.39:1	AA large text	Lc -28.7	Dividers and decoration only

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 600.

Step 50
50

#F3F6F8

oklch(97.1% 0.004 236.5)
Step 100
100

#E4EBEF

oklch(93.6% 0.009 232.4)
Step 200
200

#CEDCE3

oklch(88.6% 0.018 229)
Step 300
300

#ADC5D2

oklch(81% 0.032 231.4)
Step 400
400

#81A7BB

oklch(70.7% 0.051 231.3)
Step 500
500

#6091AA

oklch(63.1% 0.065 231.3)
Step 600
600 (this color)

#437993

oklch(54.9% 0.07 230.8)
Step 700
700

#36687F

oklch(49.2% 0.065 229.9)
Step 800
800

#2E5467

oklch(42.6% 0.054 231.6)
Step 900
900

#294654

oklch(37.7% 0.042 230.2)
Step 950
950

#192931

oklch(27% 0.026 230.6)

Export this scale for Tailwind in the Tailwind colors tool

#437993 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)	#6C7794	0.049
Deuteranopia (no green cones)	#616F93	0.043
Tritanopia (no blue cones)	#0C8081	0.052
Achromatopsia (no color)	#727272	0.070