#2457B0#2457B0

#2457B0 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.152 H 260.7°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#2457B0
RGB	rgb(36, 87, 176)
HSL	hsl(218, 66%, 42%)
HSV	hsv(218, 80%, 69%)
CMYK	cmyk(79.5%, 50.6%, 0%, 31%)
CIE-LAB	lab(38.42, 16.06, -52.26)
CIE-LCH	lch(38.42, 54.67, 287.08°)
OKLab	oklab(47.44% -0.0247 -0.1504)
OKLCH	oklch(47.44% 0.152 260.7)
XYZ	xyz(11.9694, 10.3246, 42.4279)
Luminance	0.1033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2457B0 #B07D24

analogous

#249DB0 #2457B0 #3724B0

triadic

#2457B0 #B02457 #57B024

tetradic

#2457B0 #B0249D #B07D24 #24B037

square

#2457B0 #B0249D #B07D24 #24B037

split-complementary

#2457B0 #B03724 #9DB024

monochromatic

#0F254A #1A3E7D #2457B0 #3A73D7 #6D97E1

Accessibility & contrast

On white

6.85

#2457B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2457B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2457B0

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2457B0	#FFFFFF	#000000	##FFFFFF
##2457B0	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F61B3

Deuteranopia (green-blind)

#0054AE

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2457b0;
/* rgb */ color: rgb(36, 87, 176);
/* oklch */ color: oklch(47.4% 0.152 260.7);

Tailwind

colors: {
  custom: {
    50: '#7585c8',
    500: '#2457b0',
    950: '#000000',
  },
}

SCSS

$custom: #2457b0;
$custom-light: #7585c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2457b0",
  "rgb": {
    "r": 36,
    "g": 87,
    "b": 176
  },
  "hsl": {
    "h": 218.143,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47442,
    "c": 0.1524,
    "h": 260.7
  },
  "luminance": 0.10326
}

Semantic roles & 50–950 ramp

primary

#2457B0

secondary

#C8A568

accent

#AB3FE9

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2457B0

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

Preview Lab → · Contrast checker → · Palette generator →