#3057B5#3057B5

#3057B5 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.156 H 264.3°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3057B5
RGB	rgb(48, 87, 181)
HSL	hsl(222, 58%, 45%)
HSV	hsv(222, 73%, 71%)
CMYK	cmyk(73.5%, 51.9%, 0%, 29%)
CIE-LAB	lab(39.21, 19.42, -53.91)
CIE-LCH	lch(39.21, 57.30, 289.81°)
OKLab	oklab(48.28% -0.0153 -0.155)
OKLCH	oklch(48.28% 0.156 264.3)
XYZ	xyz(12.9647, 10.7796, 45.1045)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3057B5 #B58E30

analogous

#309AB5 #3057B5 #4B30B5

triadic

#3057B5 #B53057 #57B530

tetradic

#3057B5 #B5309A #B58E30 #30B54B

square

#3057B5 #B5309A #B58E30 #30B54B

split-complementary

#3057B5 #B54B30 #9AB530

monochromatic

#162854 #234085 #3057B5 #5177D1 #829DDE

Accessibility & contrast

On white

6.65

#3057B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3057B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3057B5

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3057B5	#FFFFFF	#000000	##FFFFFF
##3057B5	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A63B8

Deuteranopia (green-blind)

#0057B3

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3057b5;
/* rgb */ color: rgb(48, 87, 181);
/* oklch */ color: oklch(48.3% 0.156 264.3);

Tailwind

colors: {
  custom: {
    50: '#7a85cc',
    500: '#3057b5',
    950: '#000000',
  },
}

SCSS

$custom: #3057b5;
$custom-light: #7a85cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3057b5",
  "rgb": {
    "r": 48,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 222.406,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48277,
    "c": 0.15581,
    "h": 264.3
  },
  "luminance": 0.10781
}

Semantic roles & 50–950 ramp

primary

#3057B5

secondary

#C7B07A

accent

#B446E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3057B5

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

Preview Lab → · Contrast checker → · Palette generator →