#355181
Closest named color: Dusk Blue (#26538D). oklch(43.6% 0.087 260.6), rgb(53, 81, 129).
Aa
White text reads best on this color (7.93:1).
About this color
#355181 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.087 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.023 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #355181 |
| RGB | rgb(53, 81, 129) |
| HSL | hsl(218, 42%, 36%) |
| OKLCH | oklch(43.6% 0.087 260.6) |
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 #355181 | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #355181 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #355181 text on white | 7.93:1 | AAA | Lc 87.4 | Fine for body text |
| #355181 text on black | 2.64:1 | Fails | Lc -14.7 | Not readable |
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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AEC2E2
oklch(81% 0.05 259.8)
-
Step 400
400
#84A1D4
oklch(70.6% 0.082 261.5)
-
Step 500
500
#658AC8
oklch(63.2% 0.103 260.4)
-
Step 600
600
#4C73B5
oklch(55.7% 0.112 260.4)
-
Step 700
700
#3D609C
oklch(49.2% 0.105 260.6)
-
Step 800
800 (this color)
#355181
oklch(43.6% 0.087 260.6)
-
Step 900
900
#2C4165
oklch(37.6% 0.068 260.7)
-
Step 950
950
#1A263B
oklch(26.8% 0.043 261.2)
#355181 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) | #3D5583 | 0.017 |
| Deuteranopia (no green cones) | #344E80 | 0.009 |
| Tritanopia (no blue cones) | #005C63 | 0.077 |
| Achromatopsia (no color) | #515151 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355181
#355181
oklch(43.6% 0.087 260.6)
- #6A4B08
#6A4B08
oklch(43.6% 0.086 80)
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 #355181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.023
- Light Navy Blue #2E5A88 ΔE 0.027
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.034
- Dusk #4E5481 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Twilight #4E518B ΔE 0.039
- YInMn Blue #415A77 ΔE 0.040
Use #355181 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.