#11519B
Closest named color: Dusk Blue (#26538D). oklch(44% 0.136 255.7), rgb(17, 81, 155).
Aa
White text reads best on this color (7.85:1).
About this color
#11519B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.136 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.028 away. White text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #11519B |
| RGB | rgb(17, 81, 155) |
| HSL | hsl(212, 80%, 34%) |
| OKLCH | oklch(44% 0.136 255.7) |
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 #11519B | 7.85:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #11519B | 2.67:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #11519B text on white | 7.85:1 | AAA | Lc 86.7 | Fine for body text |
| #11519B text on black | 2.67:1 | Fails | Lc -15.4 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9FC3F4
oklch(80.8% 0.08 256.2)
-
Step 400
400
#69A3EE
oklch(70.7% 0.126 255.4)
-
Step 500
500
#3E89E9
oklch(63% 0.163 256)
-
Step 600
600
#1671D7
oklch(55.6% 0.176 255.7)
-
Step 700
700
#045EBA
oklch(49.1% 0.163 255.6)
-
Step 800
800 (this color)
#11519B
oklch(44% 0.136 255.7)
-
Step 900
900
#144178
oklch(37.7% 0.106 255.7)
-
Step 950
950
#0D2646
oklch(26.8% 0.067 255.9)
#11519B 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) | #27589E | 0.027 |
| Deuteranopia (no green cones) | #004C9A | 0.017 |
| Tritanopia (no blue cones) | #00636E | 0.102 |
| Achromatopsia (no color) | #525252 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11519B
#11519B
oklch(44% 0.136 255.7)
- #6F4A00
#6F4A00
oklch(43.9% 0.092 76.1)
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 #11519B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.028
- Cobalt #1E488F ΔE 0.029
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.052
- Blueberry #464196 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.065
Use #11519B 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.