#2457B5#2457B5

#2457B5 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.8% C 0.159 H 261.3°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#2457B5
RGB	rgb(36, 87, 181)
HSL	hsl(219, 67%, 43%)
HSV	hsv(219, 80%, 71%)
CMYK	cmyk(80.1%, 51.9%, 0%, 29%)
CIE-LAB	lab(38.77, 18.01, -54.63)
CIE-LCH	lch(38.77, 57.52, 288.24°)
OKLab	oklab(47.82% -0.0241 -0.1574)
OKLCH	oklch(47.82% 0.159 261.3)
XYZ	xyz(12.4732, 10.5262, 45.0815)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2457B5 #B58224

analogous

#249FB5 #2457B5 #3A24B5

triadic

#2457B5 #B52457 #57B524

tetradic

#2457B5 #B5249F #B58224 #24B53A

square

#2457B5 #B5249F #B58224 #24B53A

split-complementary

#2457B5 #B53A24 #9FB524

monochromatic

#10264F #1A3E82 #2457B5 #3E74D9 #7199E3

Accessibility & contrast

On white

6.76

#2457B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#2457B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2457B5

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2457B5	#FFFFFF	#000000	##FFFFFF
##2457B5	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1762B8

Deuteranopia (green-blind)

#0055B3

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2457b5;
/* rgb */ color: rgb(36, 87, 181);
/* oklch */ color: oklch(47.8% 0.159 261.3);

Tailwind

colors: {
  custom: {
    50: '#7685cc',
    500: '#2457b5',
    950: '#000000',
  },
}

SCSS

$custom: #2457b5;
$custom-light: #7685cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2457b5",
  "rgb": {
    "r": 36,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 218.897,
    "s": 66.82,
    "l": 42.549
  },
  "oklch": {
    "l": 0.47823,
    "c": 0.15921,
    "h": 261.3
  },
  "luminance": 0.10528
}

Semantic roles & 50–950 ramp

primary

#2457B5

secondary

#C9A86B

accent

#AD3EEA

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2457B5

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

Preview Lab → · Contrast checker → · Palette generator →