#355A99
Closest named color: Denim Blue (#3B5B92). oklch(47.2% 0.111 260.4), rgb(53, 90, 153).
Aa
White text reads best on this color (6.83:1).
About this color
#355A99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.111 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.014 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #355A99 |
| RGB | rgb(53, 90, 153) |
| HSL | hsl(218, 49%, 40%) |
| OKLCH | oklch(47.2% 0.111 260.4) |
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 #355A99 | 6.83:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #355A99 | 3.07:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #355A99 text on white | 6.83:1 | AA | Lc 83.4 | Fine for body text |
| #355A99 text on black | 3.07:1 | AA large text | Lc -18.6 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ADC2E4
oklch(81% 0.053 260)
-
Step 400
400
#82A1D6
oklch(70.6% 0.085 260.9)
-
Step 500
500
#6289CC
oklch(63% 0.111 260.8)
-
Step 600
600
#4972B9
oklch(55.6% 0.12 260.7)
-
Step 700
700 (this color)
#355A99
oklch(47.2% 0.111 260.4)
-
Step 800
800
#304E81
oklch(42.6% 0.092 260.4)
-
Step 900
900
#2B4167
oklch(37.6% 0.071 260.8)
-
Step 950
950
#19263D
oklch(26.9% 0.047 261.3)
#355A99 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) | #3E609B | 0.021 |
| Deuteranopia (no green cones) | #2F5698 | 0.014 |
| Tritanopia (no blue cones) | #006872 | 0.091 |
| Achromatopsia (no color) | #5B5B5B | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355A99
#355A99
oklch(47.2% 0.111 260.4)
- #785400
#785400
oklch(47.2% 0.098 79.9)
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 #355A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.014
- Dusky Blue #475F94 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.030
- Dusk Blue #26538D ΔE 0.032
- Denim #3B638C ΔE 0.039
- Twilight #4E518B ΔE 0.040
- Peacock Blue #016795 ΔE 0.045
- Dusk #4E5481 ΔE 0.047
Use #355A99 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.