#277FAB#277FAB

#277FAB is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.105 H 235.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#277FAB
RGB	rgb(39, 127, 171)
HSL	hsl(200, 63%, 41%)
HSV	hsv(200, 77%, 67%)
CMYK	cmyk(77.2%, 25.7%, 0%, 32.9%)
CIE-LAB	lab(50.15, -10.38, -30.68)
CIE-LCH	lch(50.15, 32.39, 251.31°)
OKLab	oklab(56.56% -0.06 -0.0865)
OKLCH	oklch(56.56% 0.105 235.3)
XYZ	xyz(15.7738, 18.5485, 41.2691)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277FAB #AB5327

analogous

#27AB95 #277FAB #273DAB

triadic

#277FAB #AB277F #7FAB27

tetradic

#277FAB #9527AB #AB5327 #3DAB27

square

#277FAB #9527AB #AB5327 #3DAB27

split-complementary

#277FAB #AB273D #AB9527

monochromatic

#103547 #1C5A79 #277FAB #3DA1D3 #6EB9DE

Accessibility & contrast

On white

4.46

#277FAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#277FAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #277FAB

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277FAB	#FFFFFF	#000000	##000000
##277FAB	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7EAD

Deuteranopia (green-blind)

#5872AA

Tritanopia (blue-blind)

#008A8E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #277fab;
/* rgb */ color: rgb(39, 127, 171);
/* oklch */ color: oklch(56.6% 0.105 235.3);

Tailwind

colors: {
  custom: {
    50: '#75a4c4',
    500: '#277fab',
    950: '#000000',
  },
}

SCSS

$custom: #277fab;
$custom-light: #75a4c4;
$custom-dark: #000000;

JSON

{
  "hex": "#277fab",
  "rgb": {
    "r": 39,
    "g": 127,
    "b": 171
  },
  "hsl": {
    "h": 200,
    "s": 62.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.56555,
    "c": 0.10528,
    "h": 235.3
  },
  "luminance": 0.1855
}

Semantic roles & 50–950 ramp

primary

#277FAB

secondary

#C58869

accent

#7942E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #277FAB

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

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