#1383C4
Closest named color: Water Blue (#0E87CC). oklch(58.5% 0.134 242.3), rgb(19, 131, 196).
Aa
Black text reads best on this color (5.07:1).
About this color
#1383C4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.134 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.015 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.07:1 |
| White text | 4.14:1 |
Values
| HEX | #1383C4 |
| RGB | rgb(19, 131, 196) |
| HSL | hsl(202, 82%, 42%) |
| OKLCH | oklch(58.5% 0.134 242.3) |
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 #1383C4 | 4.14:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #1383C4 | 5.07:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #1383C4 text on white | 4.14:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #1383C4 text on black | 5.07:1 | AA | Lc -33.7 | Non-text elements, placeholder text |
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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#9FC6E5
oklch(80.9% 0.061 242.5)
-
Step 400
400
#68A8D8
oklch(70.7% 0.097 242.3)
-
Step 500
500
#3891CD
oklch(63.1% 0.123 242.1)
-
Step 600
600 (this color)
#1383C4
oklch(58.5% 0.134 242.3)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#0F4668
oklch(37.8% 0.08 241.5)
-
Step 950
950
#0C293D
oklch(27% 0.051 242.2)
#1383C4 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) | #6485C7 | 0.062 |
| Deuteranopia (no green cones) | #4C76C3 | 0.046 |
| Tritanopia (no blue cones) | #00939A | 0.091 |
| Achromatopsia (no color) | #7D7D7D | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1383C4
#1383C4
oklch(58.5% 0.134 242.3)
- #B36600
#B36600
oklch(58.5% 0.135 61.9)
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 #1383C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.015
- Windows Blue #3778BF ΔE 0.032
- Steel Blue #4682B4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.036
- Nice Blue #107AB0 ΔE 0.037
- Blue NCS #118AB2 ΔE 0.039
- Off Blue #5684AE ΔE 0.055
- Flat Blue #3C73A8 ΔE 0.056
Use #1383C4 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.