#30578F
Closest named color: Light Navy Blue (#2E5A88). oklch(45.6% 0.102 257.6), rgb(48, 87, 143).
Aa
White text reads best on this color (7.27:1).
About this color
#30578F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.102 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.016 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #30578F |
| RGB | rgb(48, 87, 143) |
| HSL | hsl(215, 50%, 37%) |
| OKLCH | oklch(45.6% 0.102 257.6) |
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 #30578F | 7.27:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #30578F | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #30578F text on white | 7.27:1 | AAA | Lc 85.1 | Fine for body text |
| #30578F text on black | 2.88:1 | Fails | Lc -17.0 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7BA2DC
oklch(70.6% 0.096 258.1)
-
Step 500
500
#588AD2
oklch(63% 0.122 257.5)
-
Step 600
600
#3D73BF
oklch(55.6% 0.132 257.3)
-
Step 700
700
#2F60A5
oklch(49.1% 0.123 257.4)
-
Step 800
800 (this color)
#30578F
oklch(45.6% 0.102 257.6)
-
Step 900
900
#25426B
oklch(37.8% 0.079 257.2)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#30578F 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) | #3E5B91 | 0.021 |
| Deuteranopia (no green cones) | #31528E | 0.014 |
| Tritanopia (no blue cones) | #00646C | 0.084 |
| Achromatopsia (no color) | #575757 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30578F
#30578F
oklch(45.6% 0.102 257.6)
- #744F00
#744F00
oklch(45.7% 0.095 77.7)
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 #30578F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.016
- Dusk Blue #26538D ΔE 0.016
- Denim Blue #3B5B92 ΔE 0.018
- Light Navy #155084 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.038
- Twilight #4E518B ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.039
- Denim #3B638C ΔE 0.041
Use #30578F 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.