#2978B4#2978B4

#2978B4 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.4% C 0.120 H 245.7°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#2978B4
RGB	rgb(41, 120, 180)
HSL	hsl(206, 63%, 43%)
HSV	hsv(206, 77%, 71%)
CMYK	cmyk(77.2%, 33.3%, 0%, 29.4%)
CIE-LAB	lab(48.51, -2.75, -38.47)
CIE-LCH	lch(48.51, 38.57, 265.91°)
OKLab	oklab(55.41% -0.0494 -0.1093)
OKLCH	oklch(55.41% 0.12 245.7)
XYZ	xyz(15.8660, 17.1978, 45.6545)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2978B4 #B46529

analogous

#29B4AA #2978B4 #2933B4

triadic

#2978B4 #B42978 #78B429

tetradic

#2978B4 #AA29B4 #B46529 #33B429

square

#2978B4 #AA29B4 #B46529 #33B429

split-complementary

#2978B4 #B42933 #B4AA29

monochromatic

#123650 #1E5782 #2978B4 #4597D5 #77B3E0

Accessibility & contrast

On white

4.73

#2978B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#2978B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2978B4

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2978B4	#FFFFFF	#000000	##FFFFFF
##2978B4	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7AB7

Deuteranopia (green-blind)

#496DB3

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2978b4;
/* rgb */ color: rgb(41, 120, 180);
/* oklch */ color: oklch(55.4% 0.120 245.7);

Tailwind

colors: {
  custom: {
    50: '#779ecb',
    500: '#2978b4',
    950: '#000000',
  },
}

SCSS

$custom: #2978b4;
$custom-light: #779ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#2978b4",
  "rgb": {
    "r": 41,
    "g": 120,
    "b": 180
  },
  "hsl": {
    "h": 205.899,
    "s": 62.896,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55406,
    "c": 0.11991,
    "h": 245.7
  },
  "luminance": 0.172
}

Semantic roles & 50–950 ramp

primary

#2978B4

secondary

#C89671

accent

#8942E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2978B4

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

Preview Lab → · Contrast checker → · Palette generator →