#277AA4#277AA4

#277AA4 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.0% C 0.101 H 235.3°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#277AA4
RGB	rgb(39, 122, 164)
HSL	hsl(200, 62%, 40%)
HSV	hsv(200, 76%, 64%)
CMYK	cmyk(76.2%, 25.6%, 0%, 35.7%)
CIE-LAB	lab(48.30, -10.01, -29.51)
CIE-LCH	lch(48.30, 31.16, 251.26°)
OKLab	oklab(54.97% -0.0575 -0.0832)
OKLCH	oklch(54.97% 0.101 235.3)
XYZ	xyz(14.4944, 17.0290, 37.6378)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277AA4 #A45127

analogous

#27A490 #277AA4 #273CA4

triadic

#277AA4 #A4277A #7AA427

tetradic

#277AA4 #9027A4 #A45127 #3CA427

square

#277AA4 #9027A4 #A45127 #3CA427

split-complementary

#277AA4 #A4273C #A49027

monochromatic

#0F3041 #1B5573 #277AA4 #389DD0 #6AB5DC

Accessibility & contrast

On white

4.77

#277AA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#277AA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277AA4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277AA4	#FFFFFF	#000000	##FFFFFF
##277AA4	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6679A6

Deuteranopia (green-blind)

#556DA3

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #277aa4;
/* rgb */ color: rgb(39, 122, 164);
/* oklch */ color: oklch(55.0% 0.101 235.3);

Tailwind

colors: {
  custom: {
    50: '#74a0bf',
    500: '#277aa4',
    950: '#000000',
  },
}

SCSS

$custom: #277aa4;
$custom-light: #74a0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#277aa4",
  "rgb": {
    "r": 39,
    "g": 122,
    "b": 164
  },
  "hsl": {
    "h": 200.16,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.54971,
    "c": 0.10113,
    "h": 235.3
  },
  "luminance": 0.17031
}

Semantic roles & 50–950 ramp

primary

#277AA4

secondary

#C28465

accent

#7943E5

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #277AA4

Body copy rendered with the generated semantic roles for this colour.

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