#1977B3#1977B3

#1977B3 is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 54.8% C 0.124 H 243.4°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#1977B3
RGB	rgb(25, 119, 179)
HSL	hsl(203, 75%, 40%)
HSV	hsv(203, 86%, 70%)
CMYK	cmyk(86%, 33.5%, 0%, 29.8%)
CIE-LAB	lab(47.82, -4.10, -39.00)
CIE-LCH	lch(47.82, 39.22, 264.00°)
OKLab	oklab(54.75% -0.0556 -0.1109)
OKLCH	oklch(54.75% 0.124 243.4)
XYZ	xyz(15.1312, 16.6531, 45.0559)
Luminance	0.1666 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1977B3 #B35519

analogous

#19B3A2 #1977B3 #192AB3

triadic

#1977B3 #B31977 #77B319

tetradic

#1977B3 #A219B3 #B35519 #2AB319

square

#1977B3 #A219B3 #B35519 #2AB319

split-complementary

#1977B3 #B3192A #B3A219

monochromatic

#0A3048 #12537D #1977B3 #2899E1 #5EB2E8

Accessibility & contrast

On white

4.85

#1977B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#1977B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1977B3

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1977B3	#FFFFFF	#000000	##FFFFFF
##1977B3	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A79B6

Deuteranopia (green-blind)

#456BB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #1977b3;
/* rgb */ color: rgb(25, 119, 179);
/* oklch */ color: oklch(54.8% 0.124 243.4);

Tailwind

colors: {
  custom: {
    50: '#739dca',
    500: '#1977b3',
    950: '#000000',
  },
}

SCSS

$custom: #1977b3;
$custom-light: #739dca;
$custom-dark: #000000;

JSON

{
  "hex": "#1977b3",
  "rgb": {
    "r": 25,
    "g": 119,
    "b": 179
  },
  "hsl": {
    "h": 203.377,
    "s": 75.49,
    "l": 40
  },
  "oklch": {
    "l": 0.5475,
    "c": 0.12411,
    "h": 243.4
  },
  "luminance": 0.16655
}

Semantic roles & 50–950 ramp

primary

#1977B3

secondary

#CC875B

accent

#7F36F2

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1977B3

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

Preview Lab → · Contrast checker → · Palette generator →