#3475A0
Closest named color: Muted Blue (#3B719F). oklch(54% 0.094 240.7), rgb(52, 117, 160).
Aa
White text reads best on this color (5.00:1).
About this color
#3475A0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.094 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.012 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #3475A0 |
| RGB | rgb(52, 117, 160) |
| HSL | hsl(204, 51%, 42%) |
| OKLCH | oklch(54% 0.094 240.7) |
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 #3475A0 | 5.00:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #3475A0 | 4.19:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #3475A0 text on white | 5.00:1 | AA | Lc 74.4 | Content text, not long reading |
| #3475A0 text on black | 4.19:1 | AA large text | Lc -27.4 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE8
oklch(88.6% 0.024 240.1)
-
Step 300
300
#A9C5DA
oklch(80.9% 0.042 240.5)
-
Step 400
400
#7AA7C7
oklch(70.8% 0.067 239.9)
-
Step 500
500
#5690B9
oklch(63% 0.087 240.8)
-
Step 600
600 (this color)
#3475A0
oklch(54% 0.094 240.7)
-
Step 700
700
#2B668E
oklch(49% 0.089 241.5)
-
Step 800
800
#255473
oklch(42.8% 0.073 240.4)
-
Step 900
900
#23455D
oklch(37.6% 0.057 241.3)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#3475A0 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) | #6175A2 | 0.049 |
| Deuteranopia (no green cones) | #536B9F | 0.039 |
| Tritanopia (no blue cones) | #008084 | 0.067 |
| Achromatopsia (no color) | #6F6F6F | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3475A0
#3475A0
oklch(54% 0.094 240.7)
- #966130
#966130
oklch(54% 0.094 61.3)
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 #3475A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.012
- Flat Blue #3C73A8 ΔE 0.017
- Dull Blue #49759C ΔE 0.020
- Cerulean #457B9D ΔE 0.026
- Ocean Blue #03719C ΔE 0.029
- Nice Blue #107AB0 ΔE 0.029
- Sea Blue #047495 ΔE 0.030
- Stormy Blue #507B9C ΔE 0.035
Use #3475A0 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.