#13639D
Closest named color: Peacock Blue (#016795). oklch(48.5% 0.118 246.6), rgb(19, 99, 157).
Aa
White text reads best on this color (6.36:1).
About this color
#13639D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.118 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.020 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #13639D |
| RGB | rgb(19, 99, 157) |
| HSL | hsl(205, 78%, 35%) |
| OKLCH | oklch(48.5% 0.118 246.6) |
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 #13639D | 6.36:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #13639D | 3.29:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #13639D text on white | 6.36:1 | AA | Lc 81.2 | Fine for body text |
| #13639D text on black | 3.29:1 | AA large text | Lc -20.7 | 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 700.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E4
oklch(80.9% 0.057 246.1)
-
Step 400
400
#70A6D6
oklch(70.6% 0.091 246.3)
-
Step 500
500
#488FCC
oklch(63.1% 0.117 246.9)
-
Step 600
600
#2578B8
oklch(55.5% 0.126 246.5)
-
Step 700
700 (this color)
#13639D
oklch(48.5% 0.118 246.6)
-
Step 800
800
#165281
oklch(42.6% 0.098 247)
-
Step 900
900
#1A4567
oklch(37.8% 0.075 245.6)
-
Step 950
950
#11283D
oklch(26.9% 0.049 248.1)
#13639D 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) | #47669F | 0.045 |
| Deuteranopia (no green cones) | #335A9C | 0.030 |
| Tritanopia (no blue cones) | #007178 | 0.083 |
| Achromatopsia (no color) | #5F5F5F | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13639D
#13639D
oklch(48.5% 0.118 246.6)
- #875100
#875100
oklch(48.6% 0.108 66.8)
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 #13639D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.035
- Denim #3B638C ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.039
- Mid Blue #276AB3 ΔE 0.041
- Ocean Blue #03719C ΔE 0.042
- Dusky Blue #475F94 ΔE 0.043
- Dusk Blue #26538D ΔE 0.048
Use #13639D 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.