#1A518F
Closest named color: Dusk Blue (#26538D). oklch(43.4% 0.117 254.3), rgb(26, 81, 143).
Aa
White text reads best on this color (8.02:1).
About this color
#1A518F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.117 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.012 away. White text reads best on it, at 8.02:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.61:1 |
| White text | 8.02:1 |
Values
| HEX | #1A518F |
| RGB | rgb(26, 81, 143) |
| HSL | hsl(212, 69%, 33%) |
| OKLCH | oklch(43.4% 0.117 254.3) |
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 #1A518F | 8.02:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #1A518F | 2.61:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #1A518F text on white | 8.02:1 | AAA | Lc 87.4 | Fine for body text |
| #1A518F text on black | 2.61:1 | Fails | Lc -14.7 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A3C4ED
oklch(81% 0.068 254.1)
-
Step 400
400
#70A4E4
oklch(70.8% 0.109 254.2)
-
Step 500
500
#488BDC
oklch(63.1% 0.14 254.5)
-
Step 600
600
#2773C9
oklch(55.5% 0.152 254.5)
-
Step 700
700
#1960AE
oklch(49% 0.142 254.5)
-
Step 800
800 (this color)
#1A518F
oklch(43.4% 0.117 254.3)
-
Step 900
900
#1B4271
oklch(37.7% 0.092 254.8)
-
Step 950
950
#112742
oklch(27% 0.058 254.7)
#1A518F 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) | #325691 | 0.028 |
| Deuteranopia (no green cones) | #1D4B8E | 0.017 |
| Tritanopia (no blue cones) | #006069 | 0.088 |
| Achromatopsia (no color) | #505050 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A518F
#1A518F
oklch(43.4% 0.117 254.3)
- #6E4800
#6E4800
oklch(43.4% 0.092 74.6)
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 #1A518F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.012
- Light Navy #155084 ΔE 0.019
- Cobalt #1E488F ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.054
- Twilight #4E518B ΔE 0.058
Use #1A518F 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.