#1A5AC5
Closest named color: Blue Blue (#2242C7). oklch(49.4% 0.179 260.4), rgb(26, 90, 197).
Aa
White text reads best on this color (6.33:1).
About this color
#1A5AC5 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.179 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.055 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.179) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #1A5AC5 |
| RGB | rgb(26, 90, 197) |
| HSL | hsl(218, 77%, 44%) |
| OKLCH | oklch(49.4% 0.179 260.4) |
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 #1A5AC5 | 6.33:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #1A5AC5 | 3.31:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #1A5AC5 text on white | 6.33:1 | AA | Lc 80.9 | Fine for body text |
| #1A5AC5 text on black | 3.31:1 | AA large text | Lc -21.0 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A1C2F9
oklch(81% 0.086 260.5)
-
Step 400
400
#6DA0F6
oklch(70.7% 0.138 260.4)
-
Step 500
500
#4585F3
oklch(63.1% 0.178 260.5)
-
Step 600
600
#266CE1
oklch(55.6% 0.192 260.3)
-
Step 700
700 (this color)
#1A5AC5
oklch(49.4% 0.179 260.4)
-
Step 800
800
#17499E
oklch(42.6% 0.148 260.5)
-
Step 900
900
#193E7E
oklch(37.6% 0.117 260.6)
-
Step 950
950
#10254A
oklch(27% 0.074 260.8)
#1A5AC5 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) | #0067C9 | 0.033 |
| Deuteranopia (no green cones) | #0058C3 | 0.012 |
| Tritanopia (no blue cones) | #007587 | 0.137 |
| Achromatopsia (no color) | #5F5F5F | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A5AC5
#1A5AC5
oklch(49.4% 0.179 260.4)
- #7F5A00
#7F5A00
oklch(49.4% 0.102 80.7)
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 #1A5AC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.056
- Warm Blue #4B57DB ΔE 0.057
- Azul #1D5DEC ΔE 0.061
- Royal Blue #4169E1 ΔE 0.069
- French Blue #436BAD ΔE 0.074
- Neon Blue #4361EE ΔE 0.077
- Majorelle Blue #3F37C9 ΔE 0.077
Use #1A5AC5 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.