#1A4298
Closest named color: Cobalt (#1E488F). oklch(40.7% 0.148 262.8), rgb(26, 66, 152).
Aa
White text reads best on this color (9.22:1).
About this color
#1A4298 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.148 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.024 away. White text reads best on it, at 9.22:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #1A4298 |
| RGB | rgb(26, 66, 152) |
| HSL | hsl(221, 71%, 35%) |
| OKLCH | oklch(40.7% 0.148 262.8) |
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 #1A4298 | 9.22:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #1A4298 | 2.27:1 | Fails | Lc 13.3 | Not readable |
| #1A4298 text on white | 9.22:1 | AAA | Lc 90.7 | Preferred for body text |
| #1A4298 text on black | 2.27:1 | Fails | Lc -11.6 | Not readable |
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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A3C1F9
oklch(80.9% 0.086 262.7)
-
Step 400
400
#729FF7
oklch(70.8% 0.138 262.8)
-
Step 500
500
#4D83F3
oklch(63% 0.178 263)
-
Step 600
600
#316AE2
oklch(55.6% 0.193 262.7)
-
Step 700
700
#2557C4
oklch(49% 0.179 263)
-
Step 800
800 (this color)
#1A4298
oklch(40.7% 0.148 262.8)
-
Step 900
900
#1F3D7E
oklch(37.6% 0.116 263.3)
-
Step 950
950
#12254A
oklch(27.1% 0.073 262.2)
#1A4298 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) | #004D9B | 0.029 |
| Deuteranopia (no green cones) | #004296 | 0.014 |
| Tritanopia (no blue cones) | #005766 | 0.114 |
| Achromatopsia (no color) | #474747 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A4298
#1A4298
oklch(40.7% 0.148 262.8)
- #5F4400
#5F4400
oklch(40.6% 0.083 82.8)
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 #1A4298, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.024
- Sapphire #2138AB ΔE 0.039
- Twilight Blue #0A437A ΔE 0.052
- Blueberry #464196 ΔE 0.053
- Light Navy #155084 ΔE 0.054
- Dusk Blue #26538D ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.060
- Deep Sea Blue #015482 ΔE 0.067
Use #1A4298 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.