#1A55C8
Closest named color: Blue Blue (#2242C7). oklch(48.7% 0.189 261.9), rgb(26, 85, 200).
Aa
White text reads best on this color (6.60:1).
About this color
#1A55C8 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.189 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.043 away. White text reads best on it, at 6.60:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.17:1 |
| White text | 6.60:1 |
Values
| HEX | #1A55C8 |
| RGB | rgb(26, 85, 200) |
| HSL | hsl(220, 77%, 44%) |
| OKLCH | oklch(48.7% 0.189 261.9) |
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 #1A55C8 | 6.60:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #1A55C8 | 3.17:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #1A55C8 text on white | 6.60:1 | AA | Lc 82.0 | Fine for body text |
| #1A55C8 text on black | 3.17:1 | AA large text | Lc -19.9 | 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
#A0C1FC
oklch(80.8% 0.091 261.8)
-
Step 400
400
#6D9FFB
oklch(70.8% 0.146 261.8)
-
Step 500
500
#4683F9
oklch(63.1% 0.188 262)
-
Step 600
600
#2869E8
oklch(55.6% 0.204 261.9)
-
Step 700
700 (this color)
#1A55C8
oklch(48.7% 0.189 261.9)
-
Step 800
800
#1947A3
oklch(42.6% 0.157 262.1)
-
Step 900
900
#1A3D81
oklch(37.7% 0.122 261.9)
-
Step 950
950
#10244C
oklch(26.9% 0.079 262.4)
#1A55C8 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) | #0065CC | 0.039 |
| Deuteranopia (no green cones) | #0055C6 | 0.010 |
| Tritanopia (no blue cones) | #007286 | 0.144 |
| Achromatopsia (no color) | #5D5D5D | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A55C8
#1A55C8
oklch(48.7% 0.189 261.9)
- #7C5900
#7C5900
oklch(48.8% 0.101 81.9)
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 #1A55C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.057
- Azul #1D5DEC ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.066
- Mid Blue #276AB3 ΔE 0.069
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Royal Blue #4169E1 ΔE 0.075
- Neon Blue #4361EE ΔE 0.078
Use #1A55C8 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.