#354580
Closest named color: Cobalt (#1E488F). oklch(40.8% 0.101 270.1), rgb(53, 69, 128).
Aa
White text reads best on this color (9.07:1).
About this color
#354580 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.101 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 9.07:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #354580 |
| RGB | rgb(53, 69, 128) |
| HSL | hsl(227, 41%, 35%) |
| OKLCH | oklch(40.8% 0.101 270.1) |
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 #354580 | 9.07:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #354580 | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #354580 text on white | 9.07:1 | AAA | Lc 90.7 | Preferred for body text |
| #354580 text on black | 2.31:1 | Fails | Lc -11.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B2BFE8
oklch(80.8% 0.06 271.2)
-
Step 400
400
#8A9EDC
oklch(70.8% 0.094 270.2)
-
Step 500
500
#6D85D2
oklch(63.2% 0.12 269.6)
-
Step 600
600
#566DBF
oklch(55.6% 0.13 270)
-
Step 700
700
#465BA5
oklch(49.2% 0.121 269.6)
-
Step 800
800 (this color)
#354580
oklch(40.8% 0.101 270.1)
-
Step 900
900
#313E6B
oklch(37.5% 0.079 270.1)
-
Step 950
950
#1D253F
oklch(27.1% 0.05 269.9)
#354580 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) | #2B4C82 | 0.021 |
| Deuteranopia (no green cones) | #21457F | 0.023 |
| Tritanopia (no blue cones) | #05525C | 0.090 |
| Achromatopsia (no color) | #494949 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #354580
#354580
oklch(40.8% 0.101 270.1)
- #5B4700
#5B4700
oklch(40.7% 0.083 90.3)
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 #354580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.040
- Twilight Blue #0A437A ΔE 0.042
- Dusk Blue #26538D ΔE 0.043
- Blueberry #464196 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.052
- Twilight #4E518B ΔE 0.055
Use #354580 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.