#1E57B3#1E57B3

#1E57B3 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.5% C 0.158 H 259.8°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#1E57B3
RGB	rgb(30, 87, 179)
HSL	hsl(217, 71%, 41%)
HSV	hsv(217, 83%, 70%)
CMYK	cmyk(83.2%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.46, 16.65, -53.97)
CIE-LCH	lch(38.46, 56.48, 287.14°)
OKLab	oklab(47.49% -0.0279 -0.1555)
OKLCH	oklch(47.49% 0.158 259.8)
XYZ	xyz(12.0773, 10.3456, 43.9994)
Luminance	0.1035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E57B3 #B37A1E

analogous

#1EA1B3 #1E57B3 #2F1EB3

triadic

#1E57B3 #B31E57 #57B31E

tetradic

#1E57B3 #B31EA1 #B37A1E #1EB32F

square

#1E57B3 #B31EA1 #B37A1E #1EB32F

split-complementary

#1E57B3 #B32F1E #A1B31E

monochromatic

#0C244A #153E7F #1E57B3 #3273DD #6697E5

Accessibility & contrast

On white

6.84

#1E57B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1E57B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E57B3

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E57B3	#FFFFFF	#000000	##FFFFFF
##1E57B3	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1962B6

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1e57b3;
/* rgb */ color: rgb(30, 87, 179);
/* oklch */ color: oklch(47.5% 0.158 259.8);

Tailwind

colors: {
  custom: {
    50: '#7485ca',
    500: '#1e57b3',
    950: '#000000',
  },
}

SCSS

$custom: #1e57b3;
$custom-light: #7485ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1e57b3",
  "rgb": {
    "r": 30,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 217.047,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.47488,
    "c": 0.158,
    "h": 259.8
  },
  "luminance": 0.10347
}

Semantic roles & 50–950 ramp

primary

#1E57B3

secondary

#CBA362

accent

#A93AEE

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1E57B3

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

Preview Lab → · Contrast checker → · Palette generator →