#1A4FAA
Closest named color: Cobalt (#1E488F). oklch(44.9% 0.157 260.6), rgb(26, 79, 170).
Aa
White text reads best on this color (7.65:1).
About this color
#1A4FAA is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.157 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.046 away. White text reads best on it, at 7.65:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #1A4FAA |
| RGB | rgb(26, 79, 170) |
| HSL | hsl(218, 73%, 38%) |
| OKLCH | oklch(44.9% 0.157 260.6) |
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 #1A4FAA | 7.65:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #1A4FAA | 2.74:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #1A4FAA text on white | 7.65:1 | AAA | Lc 86.0 | Fine for body text |
| #1A4FAA text on black | 2.74:1 | Fails | Lc -16.0 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC2FC
oklch(81% 0.091 260.4)
-
Step 400
400
#6A9FFB
oklch(70.6% 0.147 260.8)
-
Step 500
500
#4184F8
oklch(63.1% 0.187 260.6)
-
Step 600
600
#206AE7
oklch(55.6% 0.203 260.5)
-
Step 700
700
#1357C9
oklch(49% 0.189 260.7)
-
Step 800
800 (this color)
#1A4FAA
oklch(44.9% 0.157 260.6)
-
Step 900
900
#173E81
oklch(37.8% 0.122 260.5)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#1A4FAA 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) | #055AAD | 0.029 |
| Deuteranopia (no green cones) | #004DA8 | 0.014 |
| Tritanopia (no blue cones) | #006575 | 0.119 |
| Achromatopsia (no color) | #535353 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A4FAA
#1A4FAA
oklch(44.9% 0.157 260.6)
- #6F4E00
#6F4E00
oklch(44.8% 0.093 80.5)
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 #1A4FAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.046
- Dusk Blue #26538D ΔE 0.051
- Sapphire #2138AB ΔE 0.055
- Blue Blue #2242C7 ΔE 0.055
- Blueberry #464196 ΔE 0.061
- Light Navy #155084 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.064
- Light Navy Blue #2E5A88 ΔE 0.070
Use #1A4FAA 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.