#1857BA
Closest named color: Blue Blue (#2242C7). oklch(47.9% 0.169 259.8), rgb(24, 87, 186).
Aa
White text reads best on this color (6.74:1).
About this color
#1857BA is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.169 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.053 away. White text reads best on it, at 6.74:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.11:1 |
| White text | 6.74:1 |
Values
| HEX | #1857BA |
| RGB | rgb(24, 87, 186) |
| HSL | hsl(217, 77%, 41%) |
| OKLCH | oklch(47.9% 0.169 259.8) |
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 #1857BA | 6.74:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #1857BA | 3.11:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #1857BA text on white | 6.74:1 | AA | Lc 82.6 | Fine for body text |
| #1857BA text on black | 3.11:1 | AA large text | Lc -19.3 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A2C2F6
oklch(80.9% 0.082 260)
-
Step 400
400
#6FA1F1
oklch(70.8% 0.13 259.5)
-
Step 500
500
#4886ED
oklch(63% 0.168 260)
-
Step 600
600
#296DDB
oklch(55.5% 0.182 259.8)
-
Step 700
700 (this color)
#1857BA
oklch(47.9% 0.169 259.8)
-
Step 800
800
#1A4B9A
oklch(42.8% 0.14 259.8)
-
Step 900
900
#1B3F7A
oklch(37.6% 0.109 259.8)
-
Step 950
950
#112648
oklch(27.2% 0.069 259.6)
#1857BA 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) | #0463BE | 0.031 |
| Deuteranopia (no green cones) | #0055B8 | 0.012 |
| Tritanopia (no blue cones) | #006F80 | 0.127 |
| Achromatopsia (no color) | #5B5B5B | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1857BA
#1857BA
oklch(47.9% 0.169 259.8)
- #7A5600
#7A5600
oklch(47.9% 0.099 80.4)
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 #1857BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.053
- Mid Blue #276AB3 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.072
- Dusk Blue #26538D ΔE 0.072
- French Blue #436BAD ΔE 0.075
- Majorelle Blue #3F37C9 ΔE 0.076
- Cobalt #1E488F ΔE 0.077
Use #1857BA 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.