#2457B3#2457B3

#2457B3 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.156 H 261.1°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#2457B3
RGB	rgb(36, 87, 179)
HSL	hsl(219, 67%, 42%)
HSV	hsv(219, 80%, 70%)
CMYK	cmyk(79.9%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.63, 17.23, -53.69)
CIE-LCH	lch(38.63, 56.38, 287.79°)
OKLab	oklab(47.67% -0.0243 -0.1546)
OKLCH	oklch(47.67% 0.156 261.1)
XYZ	xyz(12.2695, 10.4447, 44.0085)
Luminance	0.1045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2457B3 #B38024

analogous

#249FB3 #2457B3 #3824B3

triadic

#2457B3 #B32457 #57B324

tetradic

#2457B3 #B3249F #B38024 #24B338

square

#2457B3 #B3249F #B38024 #24B338

split-complementary

#2457B3 #B33824 #9FB324

monochromatic

#10254D #1A3E80 #2457B3 #3C74D8 #6F98E2

Accessibility & contrast

On white

6.80

#2457B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2457B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2457B3

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2457B3	#FFFFFF	#000000	##FFFFFF
##2457B3	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B62B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2457b3;
/* rgb */ color: rgb(36, 87, 179);
/* oklch */ color: oklch(47.7% 0.156 261.1);

Tailwind

colors: {
  custom: {
    50: '#7685ca',
    500: '#2457b3',
    950: '#000000',
  },
}

SCSS

$custom: #2457b3;
$custom-light: #7685ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2457b3",
  "rgb": {
    "r": 36,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 218.601,
    "s": 66.512,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4767,
    "c": 0.15649,
    "h": 261.1
  },
  "luminance": 0.10446
}

Semantic roles & 50–950 ramp

primary

#2457B3

secondary

#C9A76A

accent

#AC3EE9

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2457B3

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

Preview Lab → · Contrast checker → · Palette generator →