#2357B1#2357B1

#2357B1 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.5% C 0.154 H 260.6°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#2357B1
RGB	rgb(35, 87, 177)
HSL	hsl(218, 67%, 42%)
HSV	hsv(218, 80%, 69%)
CMYK	cmyk(80.2%, 50.8%, 0%, 30.6%)
CIE-LAB	lab(38.46, 16.34, -52.78)
CIE-LCH	lch(38.46, 55.26, 287.20°)
OKLab	oklab(47.49% -0.0252 -0.152)
OKLCH	oklch(47.49% 0.154 260.6)
XYZ	xyz(12.0343, 10.3466, 42.9493)
Luminance	0.1035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2357B1 #B17D23

analogous

#239EB1 #2357B1 #3623B1

triadic

#2357B1 #B12357 #57B123

tetradic

#2357B1 #B1239E #B17D23 #23B136

square

#2357B1 #B1239E #B17D23 #23B136

split-complementary

#2357B1 #B13623 #9EB123

monochromatic

#0F254B #193E7E #2357B1 #3973D8 #6C97E2

Accessibility & contrast

On white

6.84

#2357B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2357B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2357B1

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2357B1	#FFFFFF	#000000	##FFFFFF
##2357B1	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E61B4

Deuteranopia (green-blind)

#0054AF

Tritanopia (blue-blind)

#006D7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2357b1;
/* rgb */ color: rgb(35, 87, 177);
/* oklch */ color: oklch(47.5% 0.154 260.6);

Tailwind

colors: {
  custom: {
    50: '#7585c9',
    500: '#2357b1',
    950: '#000000',
  },
}

SCSS

$custom: #2357b1;
$custom-light: #7585c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2357b1",
  "rgb": {
    "r": 35,
    "g": 87,
    "b": 177
  },
  "hsl": {
    "h": 218.028,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47485,
    "c": 0.15403,
    "h": 260.6
  },
  "luminance": 0.10348
}

Semantic roles & 50–950 ramp

primary

#2357B1

secondary

#C8A568

accent

#AB3EEA

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2357B1

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

Preview Lab → · Contrast checker → · Palette generator →