#1857B4#1857B4

#1857B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.161 H 259.0°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#1857B4
RGB	rgb(24, 87, 180)
HSL	hsl(216, 76%, 40%)
HSV	hsv(216, 87%, 71%)
CMYK	cmyk(86.7%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(38.38, 16.56, -54.69)
CIE-LCH	lch(38.38, 57.14, 286.85°)
OKLab	oklab(47.41% -0.0307 -0.1577)
OKLCH	oklch(47.41% 0.161 259)
XYZ	xyz(12.0201, 10.3043, 44.5266)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1857B4 #B47518

analogous

#18A5B4 #1857B4 #2718B4

triadic

#1857B4 #B41857 #57B418

tetradic

#1857B4 #B418A5 #B47518 #18B427

square

#1857B4 #B418A5 #B47518 #18B427

split-complementary

#1857B4 #B42718 #A5B418

monochromatic

#0A2348 #113D7E #1857B4 #2773E2 #5D96E9

Accessibility & contrast

On white

6.86

#1857B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1857B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1857B4

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1857B4	#FFFFFF	#000000	##FFFFFF
##1857B4	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1662B7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1857b4;
/* rgb */ color: rgb(24, 87, 180);
/* oklch */ color: oklch(47.4% 0.161 259.0);

Tailwind

colors: {
  custom: {
    50: '#7385cb',
    500: '#1857b4',
    950: '#000000',
  },
}

SCSS

$custom: #1857b4;
$custom-light: #7385cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1857b4",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 215.769,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.47414,
    "c": 0.16065,
    "h": 259
  },
  "luminance": 0.10306
}

Semantic roles & 50–950 ramp

primary

#1857B4

secondary

#CD9F5B

accent

#A635F3

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1857B4

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

Preview Lab → · Contrast checker → · Palette generator →