#3057AD#3057AD

#3057AD is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.145 H 263.5°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3057AD
RGB	rgb(48, 87, 173)
HSL	hsl(221, 57%, 43%)
HSV	hsv(221, 72%, 68%)
CMYK	cmyk(72.3%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(38.66, 16.40, -50.08)
CIE-LCH	lch(38.66, 52.69, 288.14°)
OKLab	oklab(47.68% -0.0163 -0.1438)
OKLCH	oklch(47.68% 0.145 263.5)
XYZ	xyz(12.1673, 10.4606, 40.9049)
Luminance	0.1046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3057AD #AD8630

analogous

#3095AD #3057AD #4730AD

triadic

#3057AD #AD3057 #57AD30

tetradic

#3057AD #AD3095 #AD8630 #30AD47

square

#3057AD #AD3095 #AD8630 #30AD47

split-complementary

#3057AD #AD4730 #95AD30

monochromatic

#15274D #233F7D #3057AD #4D75CE #7D9ADB

Accessibility & contrast

On white

6.79

#3057AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3057AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3057AD

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3057AD	#FFFFFF	#000000	##FFFFFF
##3057AD	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2661B0

Deuteranopia (green-blind)

#0056AB

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3057ad;
/* rgb */ color: rgb(48, 87, 173);
/* oklch */ color: oklch(47.7% 0.145 263.5);

Tailwind

colors: {
  custom: {
    50: '#7885c6',
    500: '#3057ad',
    950: '#000000',
  },
}

SCSS

$custom: #3057ad;
$custom-light: #7885c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3057ad",
  "rgb": {
    "r": 48,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 221.28,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.47682,
    "c": 0.1447,
    "h": 263.5
  },
  "luminance": 0.10462
}

Semantic roles & 50–950 ramp

primary

#3057AD

secondary

#C3AB75

accent

#B048E0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3057AD

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

Preview Lab → · Contrast checker → · Palette generator →