#345F9C
Closest named color: Denim Blue (#3B5B92). oklch(48.5% 0.11 257.4), rgb(52, 95, 156).
Aa
White text reads best on this color (6.43:1).
About this color
#345F9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.110 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.018 away. White text reads best on it, at 6.43:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #345F9C |
| RGB | rgb(52, 95, 156) |
| HSL | hsl(215, 50%, 41%) |
| OKLCH | oklch(48.5% 0.11 257.4) |
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 #345F9C | 6.43:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #345F9C | 3.26:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #345F9C text on white | 6.43:1 | AA | Lc 81.7 | Fine for body text |
| #345F9C text on black | 3.26:1 | AA large text | Lc -20.2 | 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 700.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC2E3
oklch(80.8% 0.053 257.4)
-
Step 400
400
#7FA2D6
oklch(70.6% 0.086 258.1)
-
Step 500
500
#5E8BCA
oklch(63.1% 0.108 256.9)
-
Step 600
600
#4474B7
oklch(55.7% 0.117 257)
-
Step 700
700 (this color)
#345F9C
oklch(48.5% 0.11 257.4)
-
Step 800
800
#2D4F80
oklch(42.7% 0.091 257.6)
-
Step 900
900
#284267
oklch(37.7% 0.071 257.3)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#345F9C 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) | #44649E | 0.024 |
| Deuteranopia (no green cones) | #355A9B | 0.014 |
| Tritanopia (no blue cones) | #006D76 | 0.089 |
| Achromatopsia (no color) | #5E5E5E | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #345F9C
#345F9C
oklch(48.5% 0.11 257.4)
- #7E5600
#7E5600
oklch(48.4% 0.101 77.5)
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 #345F9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.018
- Dusky Blue #475F94 ΔE 0.024
- Denim #3B638C ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.035
- Peacock Blue #016795 ΔE 0.037
- Mid Blue #276AB3 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- French Blue #436BAD ΔE 0.045
Use #345F9C 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.