#1856CB
Closest named color: Blue Blue (#2242C7). oklch(49.1% 0.192 261.7), rgb(24, 86, 203).
Aa
White text reads best on this color (6.49:1).
About this color
#1856CB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.192 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.045 away. White text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #1856CB |
| RGB | rgb(24, 86, 203) |
| HSL | hsl(219, 79%, 45%) |
| OKLCH | oklch(49.1% 0.192 261.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1856CB | 6.49:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #1856CB | 3.23:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #1856CB text on white | 6.49:1 | AA | Lc 81.5 | Fine for body text |
| #1856CB text on black | 3.23:1 | AA large text | Lc -20.4 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#9FC1FD
oklch(80.8% 0.093 261.6)
-
Step 400
400
#6B9FFD
oklch(70.8% 0.149 261.4)
-
Step 500
500
#4483FA
oklch(63.1% 0.189 261.7)
-
Step 600
600
#2569E9
oklch(55.6% 0.206 261.6)
-
Step 700
700 (this color)
#1856CB
oklch(49.1% 0.192 261.7)
-
Step 800
800
#1647A4
oklch(42.6% 0.159 261.6)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#1856CB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0066CF | 0.039 |
| Deuteranopia (no green cones) | #0056C9 | 0.009 |
| Tritanopia (no blue cones) | #007488 | 0.147 |
| Achromatopsia (no color) | #5E5E5E | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1856CB
#1856CB
oklch(49.1% 0.192 261.7)
- #7D5A00
#7D5A00
oklch(49.1% 0.101 82.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1856CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.045
- Azul #1D5DEC ΔE 0.054
- Warm Blue #4B57DB ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.068
- Mid Blue #276AB3 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.071
- Neon Blue #4361EE ΔE 0.073
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
Use #1856CB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.