#2357B3#2357B3

#2357B3 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.6% C 0.157 H 260.8°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#2357B3
RGB	rgb(35, 87, 179)
HSL	hsl(218, 67%, 42%)
HSV	hsv(218, 80%, 70%)
CMYK	cmyk(80.4%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.60, 17.12, -53.74)
CIE-LCH	lch(38.60, 56.40, 287.68°)
OKLab	oklab(47.64% -0.0249 -0.1548)
OKLCH	oklch(47.64% 0.157 260.8)
XYZ	xyz(12.2351, 10.4269, 44.0068)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2357B3 #B37F23

analogous

#239FB3 #2357B3 #3723B3

triadic

#2357B3 #B32357 #57B323

tetradic

#2357B3 #B3239F #B37F23 #23B337

square

#2357B3 #B3239F #B37F23 #23B337

split-complementary

#2357B3 #B33723 #9FB323

monochromatic

#0F254D #193E80 #2357B3 #3B74D9 #6E98E3

Accessibility & contrast

On white

6.81

#2357B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2357B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2357B3

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2357B3	#FFFFFF	#000000	##FFFFFF
##2357B3	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A62B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2357b3;
/* rgb */ color: rgb(35, 87, 179);
/* oklch */ color: oklch(47.6% 0.157 260.8);

Tailwind

colors: {
  custom: {
    50: '#7585ca',
    500: '#2357b3',
    950: '#000000',
  },
}

SCSS

$custom: #2357b3;
$custom-light: #7585ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2357b3",
  "rgb": {
    "r": 35,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 218.333,
    "s": 67.29,
    "l": 41.961
  },
  "oklch": {
    "l": 0.47637,
    "c": 0.15676,
    "h": 260.8
  },
  "luminance": 0.10428
}

Semantic roles & 50–950 ramp

primary

#2357B3

secondary

#C9A669

accent

#AC3EEA

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2357B3

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

Preview Lab → · Contrast checker → · Palette generator →