#355A7B
Closest named color: YInMn Blue (#415A77). oklch(45.5% 0.069 246.9), rgb(53, 90, 123).
Aa
White text reads best on this color (7.24:1).
About this color
#355A7B is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.069 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.015 away. White text reads best on it, at 7.24:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.89:1 |
| White text | 7.24:1 |
Values
| HEX | #355A7B |
| RGB | rgb(53, 90, 123) |
| HSL | hsl(208, 40%, 35%) |
| OKLCH | oklch(45.5% 0.069 246.9) |
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 #355A7B | 7.24:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #355A7B | 2.89:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #355A7B text on white | 7.24:1 | AAA | Lc 85.0 | Fine for body text |
| #355A7B text on black | 2.89:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#80A5C7
oklch(70.7% 0.064 246.6)
-
Step 500
500
#5F8EB9
oklch(63% 0.083 247.1)
-
Step 600
600
#4578A5
oklch(55.7% 0.089 246.8)
-
Step 700
700
#36658D
oklch(49.2% 0.083 246.2)
-
Step 800
800 (this color)
#355A7B
oklch(45.5% 0.069 246.9)
-
Step 900
900
#29445D
oklch(37.7% 0.054 247.6)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#355A7B 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) | #4C5B7C | 0.029 |
| Deuteranopia (no green cones) | #43547A | 0.023 |
| Tritanopia (no blue cones) | #056265 | 0.059 |
| Achromatopsia (no color) | #575757 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355A7B
#355A7B
oklch(45.5% 0.069 246.9)
- #704F2A
#704F2A
oklch(45.5% 0.069 67.7)
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 #355A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.022
- Denim #3B638C ΔE 0.036
- Dusk #4E5481 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.039
- Dusty Grape #545775 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.043
- Dusk Blue #26538D ΔE 0.043
Use #355A7B 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.