#1A3B68
Closest named color: Marine Blue (#01386A). oklch(35.3% 0.088 256.9), rgb(26, 59, 104).
Aa
White text reads best on this color (11.23:1).
About this color
#1A3B68 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.088 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.021 away. White text reads best on it, at 11.23:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.86:1 |
| White text | 11.23:1 |
Values
| HEX | #1A3B68 |
| RGB | rgb(26, 59, 104) |
| HSL | hsl(215, 60%, 25%) |
| OKLCH | oklch(35.3% 0.088 256.9) |
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 #1A3B68 | 11.23:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #1A3B68 | 1.86:1 | Fails | Lc 8.2 | Not readable |
| #1A3B68 text on white | 11.23:1 | AAA | Lc 95.7 | Preferred for body text |
| #1A3B68 text on black | 1.86:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#75A3E2
oklch(70.8% 0.105 256.4)
-
Step 500
500
#518AD9
oklch(63.1% 0.134 256.9)
-
Step 600
600
#3472C7
oklch(55.5% 0.147 257.1)
-
Step 700
700
#265FAC
oklch(49% 0.137 257.1)
-
Step 800
800
#214E8B
oklch(42.6% 0.113 256.9)
-
Step 900
900 (this color)
#1A3B68
oklch(35.3% 0.088 256.9)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#1A3B68 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) | #263F6A | 0.019 |
| Deuteranopia (no green cones) | #193767 | 0.012 |
| Tritanopia (no blue cones) | #00454C | 0.068 |
| Achromatopsia (no color) | #3B3B3B | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3B68
#1A3B68
oklch(35.3% 0.088 256.9)
- #513500
#513500
oklch(35.3% 0.074 76.2)
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 #1A3B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.032
- Twilight Blue #0A437A ΔE 0.036
- Marine #042E60 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Midnight Green #073B4C ΔE 0.054
- Charcoal #264653 ΔE 0.059
Use #1A3B68 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.