#1A4B90
Closest named color: Cobalt (#1E488F). oklch(42% 0.126 257.9), rgb(26, 75, 144).
Aa
White text reads best on this color (8.56:1).
About this color
#1A4B90 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.126 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.008 away. White text reads best on it, at 8.56:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.45:1 |
| White text | 8.56:1 |
Values
| HEX | #1A4B90 |
| RGB | rgb(26, 75, 144) |
| HSL | hsl(215, 69%, 33%) |
| OKLCH | oklch(42% 0.126 257.9) |
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 #1A4B90 | 8.56:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #1A4B90 | 2.45:1 | Fails | Lc 15.0 | Not readable |
| #1A4B90 text on white | 8.56:1 | AAA | Lc 89.0 | Fine for body text |
| #1A4B90 text on black | 2.45:1 | Fails | Lc -13.2 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF5
oklch(88.6% 0.041 257.5)
-
Step 300
300
#A3C3F0
oklch(80.9% 0.073 256.9)
-
Step 400
400
#71A2E9
oklch(70.7% 0.117 257.6)
-
Step 500
500
#4B89E3
oklch(63.2% 0.15 257.8)
-
Step 600
600
#2D71D0
oklch(55.7% 0.162 257.7)
-
Step 700
700
#1F5EB5
oklch(49.2% 0.152 257.8)
-
Step 800
800 (this color)
#1A4B90
oklch(42% 0.126 257.9)
-
Step 900
900
#1D4174
oklch(37.7% 0.097 257.5)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#1A4B90 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) | #255293 | 0.024 |
| Deuteranopia (no green cones) | #03478F | 0.018 |
| Tritanopia (no blue cones) | #005C66 | 0.098 |
| Achromatopsia (no color) | #4C4C4C | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A4B90
#1A4B90
oklch(42% 0.126 257.9)
- #674600
#674600
oklch(42% 0.088 78)
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 #1A4B90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.008
- Light Navy #155084 ΔE 0.027
- Dusk Blue #26538D ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.039
- Twilight Blue #0A437A ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.054
- Blueberry #464196 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.060
Use #1A4B90 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.