#355266
Closest named color: YInMn Blue (#415A77). oklch(42.4% 0.048 239.5), rgb(53, 82, 102).
Aa
White text reads best on this color (8.23:1).
About this color
#355266 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.048 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.038 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #355266 |
| RGB | rgb(53, 82, 102) |
| HSL | hsl(204, 32%, 30%) |
| OKLCH | oklch(42.4% 0.048 239.5) |
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 #355266 | 8.23:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #355266 | 2.55:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #355266 text on white | 8.23:1 | AAA | Lc 88.4 | Fine for body text |
| #355266 text on black | 2.55:1 | Fails | Lc -13.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C4D1
oklch(81% 0.028 237.7)
-
Step 400
400
#88A5BA
oklch(70.7% 0.045 239.7)
-
Step 500
500
#698FA9
oklch(63.2% 0.058 238.7)
-
Step 600
600
#507994
oklch(55.7% 0.062 238.2)
-
Step 700
700
#41657E
oklch(49% 0.058 239.8)
-
Step 800
800 (this color)
#355266
oklch(42.4% 0.048 239.5)
-
Step 900
900
#2F4454
oklch(37.6% 0.038 241.8)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#355266 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) | #495267 | 0.027 |
| Deuteranopia (no green cones) | #434C66 | 0.025 |
| Tritanopia (no blue cones) | #205759 | 0.038 |
| Achromatopsia (no color) | #4F4F4F | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355266
#355266
oklch(42.4% 0.048 239.5)
- #624833
#624833
oklch(42.4% 0.048 59.9)
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 #355266, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.043
- Deep Teal #00555A ΔE 0.046
- Petrol #005F6A ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Dusty Grape #545775 ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.054
Use #355266 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.