#1E57BB#1E57BB

#1E57BB is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.169 H 260.8°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#1E57BB
RGB	rgb(30, 87, 187)
HSL	hsl(218, 72%, 43%)
HSV	hsv(218, 84%, 73%)
CMYK	cmyk(84%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.03, 19.80, -57.73)
CIE-LCH	lch(39.03, 61.04, 288.93°)
OKLab	oklab(48.11% -0.0269 -0.1666)
OKLCH	oklch(48.11% 0.169 260.8)
XYZ	xyz(12.9100, 10.6787, 48.3848)
Luminance	0.1068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E57BB #BB821E

analogous

#1EA5BB #1E57BB #341EBB

triadic

#1E57BB #BB1E57 #57BB1E

tetradic

#1E57BB #BB1EA5 #BB821E #1EBB34

square

#1E57BB #BB1EA5 #BB821E #1EBB34

split-complementary

#1E57BB #BB341E #A5BB1E

monochromatic

#0D2652 #163E86 #1E57BB #3774DF #6C99E7

Accessibility & contrast

On white

6.70

#1E57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#1E57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E57BB

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E57BB	#FFFFFF	#000000	##FFFFFF
##1E57BB	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0263BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#007080

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1e57bb;
/* rgb */ color: rgb(30, 87, 187);
/* oklch */ color: oklch(48.1% 0.169 260.8);

Tailwind

colors: {
  custom: {
    50: '#7685d0',
    500: '#1e57bb',
    950: '#000000',
  },
}

SCSS

$custom: #1e57bb;
$custom-light: #7685d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1e57bb",
  "rgb": {
    "r": 30,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 218.217,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.48112,
    "c": 0.16874,
    "h": 260.8
  },
  "luminance": 0.1068
}

Semantic roles & 50–950 ramp

primary

#1E57BB

secondary

#CDA867

accent

#AD39EF

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #1E57BB

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

Preview Lab → · Contrast checker → · Palette generator →