#13759F
Closest named color: Ocean Blue (#03719C). oklch(53.1% 0.105 233.7), rgb(19, 117, 159).
Aa
White text reads best on this color (5.15:1).
About this color
#13759F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.105 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.014 away. White text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #13759F |
| RGB | rgb(19, 117, 159) |
| HSL | hsl(198, 79%, 35%) |
| OKLCH | oklch(53.1% 0.105 233.7) |
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 #13759F | 5.15:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #13759F | 4.07:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #13759F text on white | 5.15:1 | AA | Lc 75.1 | Fine for body text |
| #13759F text on black | 4.07:1 | AA large text | Lc -26.7 | 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 600.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C6DB
oklch(80.8% 0.048 234.5)
-
Step 400
400
#70A9C9
oklch(70.7% 0.076 233.9)
-
Step 500
500
#4693BB
oklch(63.1% 0.097 233.9)
-
Step 600
600 (this color)
#13759F
oklch(53.1% 0.105 233.7)
-
Step 700
700
#0F698F
oklch(49.1% 0.097 233.5)
-
Step 800
800
#125674
oklch(42.8% 0.081 233)
-
Step 900
900
#19475E
oklch(37.8% 0.063 233.8)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#13759F 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) | #6074A1 | 0.065 |
| Deuteranopia (no green cones) | #4E689E | 0.054 |
| Tritanopia (no blue cones) | #008083 | 0.064 |
| Achromatopsia (no color) | #6D6D6D | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13759F
#13759F
oklch(53.1% 0.105 233.7)
- #9A592A
#9A592A
oklch(53% 0.105 53.9)
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 #13759F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.014
- Sea Blue #047495 ΔE 0.017
- Muted Blue #3B719F ΔE 0.025
- Nice Blue #107AB0 ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.031
- Ocean #017B92 ΔE 0.032
- Dull Blue #49759C ΔE 0.037
- Cerulean #457B9D ΔE 0.040
Use #13759F 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.