#5378A8
Closest named color: Stormy Blue (#507B9C). oklch(56.5% 0.086 255.3), rgb(83, 120, 168).
Aa
Black text reads best on this color (4.61:1).
About this color
#5378A8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.086 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.023 away. Black text reads best on it, at 4.61:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.61:1 |
| White text | 4.54:1 |
Values
| HEX | #5378A8 |
| RGB | rgb(83, 120, 168) |
| HSL | hsl(214, 34%, 49%) |
| OKLCH | oklch(56.5% 0.086 255.3) |
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 #5378A8 | 4.54:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #5378A8 | 4.61:1 | AA | Lc 32.6 | Non-text elements, placeholder text |
| #5378A8 text on white | 4.54:1 | AA | Lc 71.5 | Content text, not long reading |
| #5378A8 text on black | 4.61:1 | AA | Lc -30.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B0C2DA
oklch(80.8% 0.039 255.6)
-
Step 400
400
#87A3C7
oklch(70.7% 0.062 254.9)
-
Step 500
500
#698CB9
oklch(63.2% 0.079 255)
-
Step 600
600 (this color)
#5378A8
oklch(56.5% 0.086 255.3)
-
Step 700
700
#41628D
oklch(49% 0.08 255.5)
-
Step 800
800
#365073
oklch(42.7% 0.067 256.1)
-
Step 900
900
#2F435D
oklch(37.8% 0.052 255.3)
-
Step 950
950
#1C2736
oklch(27% 0.032 256.3)
#5378A8 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) | #657BAA | 0.025 |
| Deuteranopia (no green cones) | #5B72A7 | 0.018 |
| Tritanopia (no blue cones) | #2B8389 | 0.076 |
| Achromatopsia (no color) | #767676 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5378A8
#5378A8
oklch(56.5% 0.086 255.3)
- #936F38
#936F38
oklch(56.6% 0.085 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 #5378A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.023
- Dull Blue #49759C ΔE 0.024
- Cerulean #457B9D ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.030
- Off Blue #5684AE ΔE 0.034
- Muted Blue #3B719F ΔE 0.037
- Cool Blue #4984B8 ΔE 0.037
Use #5378A8 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.