#1A55B4
Closest named color: Blue Blue (#2242C7). oklch(47% 0.163 259.9), rgb(26, 85, 180).
Aa
White text reads best on this color (6.99:1).
About this color
#1A55B4 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.163 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.054 away. White text reads best on it, at 6.99:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #1A55B4 |
| RGB | rgb(26, 85, 180) |
| HSL | hsl(217, 75%, 40%) |
| OKLCH | oklch(47% 0.163 259.9) |
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 #1A55B4 | 6.99:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #1A55B4 | 3.00:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #1A55B4 text on white | 6.99:1 | AA | Lc 83.6 | Fine for body text |
| #1A55B4 text on black | 3.00:1 | AA large text | Lc -18.3 | 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
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A3C2F4
oklch(80.9% 0.079 259.9)
-
Step 400
400
#71A1EF
oklch(70.8% 0.126 259.8)
-
Step 500
500
#4B87E9
oklch(63.1% 0.161 259.7)
-
Step 600
600
#2E6ED7
oklch(55.6% 0.174 259.9)
-
Step 700
700 (this color)
#1A55B4
oklch(47% 0.163 259.9)
-
Step 800
800
#1D4B97
oklch(42.7% 0.135 260)
-
Step 900
900
#1D4078
oklch(37.8% 0.104 259.4)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#1A55B4 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) | #0C60B7 | 0.029 |
| Deuteranopia (no green cones) | #0053B2 | 0.013 |
| Tritanopia (no blue cones) | #006C7C | 0.124 |
| Achromatopsia (no color) | #595959 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A55B4
#1A55B4
oklch(47% 0.163 259.9)
- #775300
#775300
oklch(46.9% 0.097 79.6)
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 #1A55B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.054
- Mid Blue #276AB3 ΔE 0.060
- Dusk Blue #26538D ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
- Cobalt #1E488F ΔE 0.067
- Sapphire #2138AB ΔE 0.071
- Blueberry #464196 ΔE 0.075
- Light Navy Blue #2E5A88 ΔE 0.076
Use #1A55B4 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.