#1366A3
Closest named color: Peacock Blue (#016795). oklch(49.6% 0.122 247), rgb(19, 102, 163).
Aa
White text reads best on this color (6.07:1).
About this color
#1366A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.122 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.025 away. White text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #1366A3 |
| RGB | rgb(19, 102, 163) |
| HSL | hsl(205, 79%, 36%) |
| OKLCH | oklch(49.6% 0.122 247) |
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 #1366A3 | 6.07:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #1366A3 | 3.45:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #1366A3 text on white | 6.07:1 | AA | Lc 79.9 | Fine for body text |
| #1366A3 text on black | 3.45:1 | AA large text | Lc -22.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A3C5E5
oklch(80.9% 0.058 247)
-
Step 400
400
#6FA6D9
oklch(70.7% 0.095 247.5)
-
Step 500
500
#458FCE
oklch(63.1% 0.12 246.9)
-
Step 600
600
#2078BB
oklch(55.6% 0.131 246.8)
-
Step 700
700 (this color)
#1366A3
oklch(49.6% 0.122 247)
-
Step 800
800
#135283
oklch(42.6% 0.102 247.3)
-
Step 900
900
#194469
oklch(37.6% 0.079 247.8)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#1366A3 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) | #4969A6 | 0.046 |
| Deuteranopia (no green cones) | #335DA2 | 0.030 |
| Tritanopia (no blue cones) | #00757C | 0.088 |
| Achromatopsia (no color) | #626262 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1366A3
#1366A3
oklch(49.6% 0.122 247)
- #8B5400
#8B5400
oklch(49.7% 0.11 67.2)
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 #1366A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.025
- Mid Blue #276AB3 ΔE 0.030
- Ocean Blue #03719C ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.042
- Denim #3B638C ΔE 0.043
- French Blue #436BAD ΔE 0.044
- Dusky Blue #475F94 ΔE 0.046
- Muted Blue #3B719F ΔE 0.047
Use #1366A3 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.