#277DA4#277DA4

#277DA4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.099 H 232.5°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#277DA4
RGB	rgb(39, 125, 164)
HSL	hsl(199, 62%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(76.2%, 23.8%, 0%, 35.7%)
CIE-LAB	lab(49.22, -11.73, -28.06)
CIE-LCH	lch(49.22, 30.41, 247.31°)
OKLab	oklab(55.71% -0.0605 -0.079)
OKLCH	oklch(55.71% 0.099 232.5)
XYZ	xyz(14.8685, 17.7771, 37.7625)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277DA4 #A44E27

analogous

#27A48D #277DA4 #273FA4

triadic

#277DA4 #A4277D #7DA427

tetradic

#277DA4 #8D27A4 #A44E27 #3FA427

square

#277DA4 #8D27A4 #A44E27 #3FA427

split-complementary

#277DA4 #A4273F #A48D27

monochromatic

#0F3241 #1B5773 #277DA4 #38A1D0 #6AB8DC

Accessibility & contrast

On white

4.61

#277DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#277DA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #277DA4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277DA4	#FFFFFF	#000000	##FFFFFF
##277DA4	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7CA6

Deuteranopia (green-blind)

#5970A3

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #277da4;
/* rgb */ color: rgb(39, 125, 164);
/* oklch */ color: oklch(55.7% 0.099 232.5);

Tailwind

colors: {
  custom: {
    50: '#74a2bf',
    500: '#277da4',
    950: '#000000',
  },
}

SCSS

$custom: #277da4;
$custom-light: #74a2bf;
$custom-dark: #000000;

JSON

{
  "hex": "#277da4",
  "rgb": {
    "r": 39,
    "g": 125,
    "b": 164
  },
  "hsl": {
    "h": 198.72,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.5571,
    "c": 0.09949,
    "h": 232.5
  },
  "luminance": 0.17779
}

Semantic roles & 50–950 ramp

primary

#277DA4

secondary

#C28265

accent

#7643E5

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #277DA4

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

Preview Lab → · Contrast checker → · Palette generator →