#355F8A
Closest named color: Denim (#3B638C). oklch(47.5% 0.084 250.5), rgb(53, 95, 138).
Aa
White text reads best on this color (6.65:1).
About this color
#355F8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.084 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.014 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #355F8A |
| RGB | rgb(53, 95, 138) |
| HSL | hsl(210, 45%, 37%) |
| OKLCH | oklch(47.5% 0.084 250.5) |
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 #355F8A | 6.65:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #355F8A | 3.15:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #355F8A text on white | 6.65:1 | AA | Lc 82.7 | Fine for body text |
| #355F8A text on black | 3.15:1 | AA large text | Lc -19.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#AEC3DB
oklch(80.9% 0.041 251.8)
-
Step 400
400
#82A4C8
oklch(70.6% 0.065 250.2)
-
Step 500
500
#628DBB
oklch(63.1% 0.084 250.9)
-
Step 600
600
#4877A7
oklch(55.7% 0.091 250.2)
-
Step 700
700 (this color)
#355F8A
oklch(47.5% 0.084 250.5)
-
Step 800
800
#305174
oklch(42.6% 0.07 251.1)
-
Step 900
900
#2B445E
oklch(37.8% 0.054 250.4)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#355F8A 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) | #4D618C | 0.030 |
| Deuteranopia (no green cones) | #415989 | 0.020 |
| Tritanopia (no blue cones) | #00696E | 0.070 |
| Achromatopsia (no color) | #5C5C5C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355F8A
#355F8A
oklch(47.5% 0.084 250.5)
- #7A5320
#7A5320
oklch(47.5% 0.084 70.3)
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 #355F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.014
- Light Navy Blue #2E5A88 ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.020
- Dusky Blue #475F94 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.032
- Peacock Blue #016795 ΔE 0.034
- Dusk #4E5481 ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
Use #355F8A 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.