#277EAF

Closest named color: Nice Blue (#107AB0). oklch(56.5% 0.11 238.4), rgb(39, 126, 175).

Black text reads best on this color (4.68:1).

About this color

#277EAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.110 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.017 away. Black text reads best on it, at 4.68:1.

Hue family	Blues
Lightness	medium-dark (57%)
Chroma	moderately saturated (0.110)
Temperature	cool
Nearest name	Nice Blue (#107AB0)
Black text	4.68:1
White text	4.47:1

Values

HEX	#277EAF
RGB	rgb(39, 126, 175)
HSL	hsl(202, 64%, 42%)
OKLCH	oklch(56.5% 0.11 238.4)

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 #277EAF	4.47:1	AA large text	Lc -76.2	Fine for body text
Black text on #277EAF	4.68:1	AA	Lc 33.4	Non-text elements, placeholder text
#277EAF text on white	4.47:1	AA large text	Lc 70.7	Content text, not long reading
#277EAF text on black	4.68:1	AA	Lc -30.9	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 600.

Step 50
50

#F2F6F9

oklch(97.1% 0.006 239.8)
Step 100
100

#E2EBF3

oklch(93.6% 0.015 244.7)
Step 200
200

#C9DCEA

oklch(88.5% 0.028 239.7)
Step 300
300

#A4C6DD

oklch(80.9% 0.049 237.8)
Step 400
400

#71A8CD

oklch(70.7% 0.079 238.8)
Step 500
500

#4792C0

oklch(63.2% 0.102 238.2)
Step 600
600 (this color)

#277EAF

oklch(56.5% 0.11 238.4)
Step 700
700

#146894

oklch(49.2% 0.102 238.3)
Step 800
800

#155578

oklch(42.8% 0.085 238.1)
Step 900
900

#1A4661

oklch(37.7% 0.067 239.1)
Step 950
950

#112939

oklch(27% 0.042 240.1)

Export this scale for Tailwind in the Tailwind colors tool

#277EAF 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)	#677EB1	0.060
Deuteranopia (no green cones)	#5471AE	0.049
Tritanopia (no blue cones)	#008A8F	0.071
Achromatopsia (no color)	#777777	0.110