#355B81
Closest named color: Light Navy Blue (#2E5A88). oklch(46% 0.076 249.8), rgb(53, 91, 129).
Aa
White text reads best on this color (7.08:1).
About this color
#355B81 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.076 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.014 away. White text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #355B81 |
| RGB | rgb(53, 91, 129) |
| HSL | hsl(210, 42%, 36%) |
| OKLCH | oklch(46% 0.076 249.8) |
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 #355B81 | 7.08:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #355B81 | 2.96:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #355B81 text on white | 7.08:1 | AAA | Lc 84.4 | Fine for body text |
| #355B81 text on black | 2.96:1 | Fails | Lc -17.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AFC3D8
oklch(80.9% 0.037 249.6)
-
Step 400
400
#85A4C4
oklch(70.7% 0.058 249.5)
-
Step 500
500
#668DB6
oklch(63.1% 0.076 250.3)
-
Step 600
600
#4D77A2
oklch(55.7% 0.082 250)
-
Step 700
700 (this color)
#355B81
oklch(46% 0.076 249.8)
-
Step 800
800
#335170
oklch(42.6% 0.063 250.3)
-
Step 900
900
#2D445B
oklch(37.8% 0.049 249.2)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#355B81 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) | #4B5C83 | 0.028 |
| Deuteranopia (no green cones) | #415580 | 0.021 |
| Tritanopia (no blue cones) | #006468 | 0.065 |
| Achromatopsia (no color) | #585858 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355B81
#355B81
oklch(46% 0.076 249.8)
- #735024
#735024
oklch(46% 0.076 70.1)
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 #355B81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.014
- YInMn Blue #415A77 ΔE 0.020
- Denim #3B638C ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.030
- Dusk #4E5481 ΔE 0.036
- Dusk Blue #26538D ΔE 0.038
- Dusky Blue #475F94 ΔE 0.040
- Dusty Grape #545775 ΔE 0.042
Use #355B81 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.