#355261
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.2% 0.043 231.6), rgb(53, 82, 97).
Aa
White text reads best on this color (8.29:1).
About this color
#355261 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.043 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.032 away. White text reads best on it, at 8.29:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #355261 |
| RGB | rgb(53, 82, 97) |
| HSL | hsl(200, 29%, 29%) |
| OKLCH | oklch(42.2% 0.043 231.6) |
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 #355261 | 8.29:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #355261 | 2.53:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #355261 text on white | 8.29:1 | AAA | Lc 88.6 | Fine for body text |
| #355261 text on black | 2.53:1 | Fails | Lc -13.6 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#88A6B5
oklch(70.8% 0.04 229.6)
-
Step 500
500
#6A8FA3
oklch(63% 0.051 232.2)
-
Step 600
600
#51798E
oklch(55.5% 0.055 232)
-
Step 700
700
#426679
oklch(49.1% 0.051 232.3)
-
Step 800
800 (this color)
#355261
oklch(42.2% 0.043 231.6)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#355261 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) | #4B5162 | 0.030 |
| Deuteranopia (no green cones) | #444C61 | 0.026 |
| Tritanopia (no blue cones) | #235657 | 0.031 |
| Achromatopsia (no color) | #4E4E4E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355261
#355261
oklch(42.2% 0.043 231.6)
- #614738
#614738
oklch(42.2% 0.043 51.2)
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 #355261, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.032
- Deep Teal #00555A ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.043
- YInMn Blue #415A77 ΔE 0.044
- Petrol #005F6A ΔE 0.047
- Charcoal #264653 ΔE 0.047
- Dark Teal #014D4E ΔE 0.056
- Dusty Grape #545775 ΔE 0.058
Use #355261 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.