#30578B
Closest named color: Light Navy Blue (#2E5A88). oklch(45.4% 0.096 256.2), rgb(48, 87, 139).
Aa
White text reads best on this color (7.33:1).
About this color
#30578B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.096 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.011 away. White text reads best on it, at 7.33:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.86:1 |
| White text | 7.33:1 |
Values
| HEX | #30578B |
| RGB | rgb(48, 87, 139) |
| HSL | hsl(214, 49%, 37%) |
| OKLCH | oklch(45.4% 0.096 256.2) |
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 #30578B | 7.33:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #30578B | 2.86:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #30578B text on white | 7.33:1 | AAA | Lc 85.3 | Fine for body text |
| #30578B text on black | 2.86:1 | Fails | Lc -16.7 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDAEE
oklch(88.4% 0.031 257.2)
-
Step 300
300
#A9C3E5
oklch(80.9% 0.056 255.2)
-
Step 400
400
#7BA3D8
oklch(70.7% 0.09 255.7)
-
Step 500
500
#598BCE
oklch(63.1% 0.115 256.1)
-
Step 600
600
#3E74BB
oklch(55.6% 0.125 256)
-
Step 700
700
#3061A1
oklch(49.1% 0.116 256)
-
Step 800
800 (this color)
#30578B
oklch(45.4% 0.096 256.2)
-
Step 900
900
#254269
oklch(37.6% 0.076 256.3)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#30578B 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) | #405B8D | 0.023 |
| Deuteranopia (no green cones) | #34528A | 0.014 |
| Tritanopia (no blue cones) | #00636A | 0.079 |
| Achromatopsia (no color) | #565656 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30578B
#30578B
oklch(45.4% 0.096 256.2)
- #744E00
#744E00
oklch(45.5% 0.095 76.6)
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 #30578B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.011
- Dusk Blue #26538D ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.021
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.036
- Dusk #4E5481 ΔE 0.039
- Twilight #4E518B ΔE 0.039
- Denim #3B638C ΔE 0.039
Use #30578B 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.