#1A3B60
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.076 253.1), rgb(26, 59, 96).
Aa
White text reads best on this color (11.42:1).
About this color
#1A3B60 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.076 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 11.42:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.83:1 |
| White text | 11.42:1 |
Values
| HEX | #1A3B60 |
| RGB | rgb(26, 59, 96) |
| HSL | hsl(212, 57%, 24%) |
| OKLCH | oklch(34.7% 0.076 253.1) |
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 #1A3B60 | 11.42:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #1A3B60 | 1.83:1 | Fails | Lc 7.8 | Not readable |
| #1A3B60 text on white | 11.42:1 | AAA | Lc 96.1 | Preferred for body text |
| #1A3B60 text on black | 1.83:1 | 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
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A7C3E5
oklch(80.8% 0.057 253.4)
-
Step 400
400
#78A4D8
oklch(70.7% 0.09 253.1)
-
Step 500
500
#538CCE
oklch(63% 0.117 253.2)
-
Step 600
600
#3775BB
oklch(55.6% 0.127 253.4)
-
Step 700
700
#2962A1
oklch(49.1% 0.117 253.2)
-
Step 800
800
#235082
oklch(42.6% 0.097 253.1)
-
Step 900
900 (this color)
#1A3B60
oklch(34.7% 0.076 253.1)
-
Step 950
950
#15273D
oklch(26.9% 0.048 254.2)
#1A3B60 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) | #2A3D62 | 0.021 |
| Deuteranopia (no green cones) | #20375F | 0.013 |
| Tritanopia (no blue cones) | #004449 | 0.059 |
| Achromatopsia (no color) | #3A3A3A | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3B60
#1A3B60
oklch(34.7% 0.076 253.1)
- #513300
#513300
oklch(34.9% 0.074 73.3)
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 #1A3B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine Blue #01386A ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.034
- Midnight Green #073B4C ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.047
- Marine #042E60 ΔE 0.047
- Charcoal #264653 ΔE 0.050
Use #1A3B60 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.