#34578A
Closest named color: Light Navy Blue (#2E5A88). oklch(45.5% 0.093 257.8), rgb(52, 87, 138).
Aa
White text reads best on this color (7.30:1).
About this color
#34578A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.093 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.011 away. White text reads best on it, at 7.30:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #34578A |
| RGB | rgb(52, 87, 138) |
| HSL | hsl(216, 45%, 37%) |
| OKLCH | oklch(45.5% 0.093 257.8) |
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 #34578A | 7.30:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #34578A | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #34578A text on white | 7.30:1 | AAA | Lc 85.2 | Fine for body text |
| #34578A text on black | 2.87:1 | Fails | Lc -16.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E4
oklch(80.8% 0.054 258)
-
Step 400
400
#7EA2D7
oklch(70.6% 0.088 257.9)
-
Step 500
500
#5D8ACC
oklch(63% 0.112 257.9)
-
Step 600
600
#4373B9
oklch(55.5% 0.121 257.8)
-
Step 700
700
#3560A0
oklch(49% 0.114 258.2)
-
Step 800
800 (this color)
#34578A
oklch(45.5% 0.093 257.8)
-
Step 900
900
#284268
oklch(37.7% 0.073 257.8)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#34578A 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) | #415B8C | 0.021 |
| Deuteranopia (no green cones) | #365389 | 0.011 |
| Tritanopia (no blue cones) | #00636A | 0.079 |
| Achromatopsia (no color) | #565656 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34578A
#34578A
oklch(45.5% 0.093 257.8)
- #734F04
#734F04
oklch(45.6% 0.093 77.8)
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 #34578A, 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
- Denim Blue #3B5B92 ΔE 0.019
- Dusk Blue #26538D ΔE 0.021
- Dusk #4E5481 ΔE 0.035
- Twilight #4E518B ΔE 0.036
- Dusky Blue #475F94 ΔE 0.037
- Light Navy #155084 ΔE 0.037
- Denim #3B638C ΔE 0.038
Use #34578A 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.