#355173
Closest named color: YInMn Blue (#415A77). oklch(42.8% 0.066 253.9), rgb(53, 81, 115).
Aa
White text reads best on this color (8.15:1).
About this color
#355173 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.066 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.033 away. White text reads best on it, at 8.15:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #355173 |
| RGB | rgb(53, 81, 115) |
| HSL | hsl(213, 37%, 33%) |
| OKLCH | oklch(42.8% 0.066 253.9) |
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 #355173 | 8.15:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #355173 | 2.57:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #355173 text on white | 8.15:1 | AAA | Lc 88.1 | Fine for body text |
| #355173 text on black | 2.57:1 | Fails | Lc -14.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE7
oklch(88.5% 0.021 254.9)
-
Step 300
300
#B0C3DA
oklch(81% 0.039 253.3)
-
Step 400
400
#86A3C7
oklch(70.7% 0.062 254.1)
-
Step 500
500
#688CB9
oklch(63.1% 0.079 254.4)
-
Step 600
600
#4F76A5
oklch(55.7% 0.086 253.8)
-
Step 700
700
#40638D
oklch(49.2% 0.079 253.7)
-
Step 800
800 (this color)
#355173
oklch(42.8% 0.066 253.9)
-
Step 900
900
#2E435D
oklch(37.7% 0.052 254.2)
-
Step 950
950
#1B2736
oklch(26.9% 0.033 254.4)
#355173 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) | #435374 | 0.020 |
| Deuteranopia (no green cones) | #3C4D72 | 0.014 |
| Tritanopia (no blue cones) | #15595D | 0.059 |
| Achromatopsia (no color) | #4F4F4F | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355173
#355173
oklch(42.8% 0.066 253.9)
- #654A23
#654A23
oklch(42.9% 0.066 74.5)
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 #355173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.039
- Light Navy #155084 ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.040
- Dusk #4E5481 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Dusty Grape #545775 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
Use #355173 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.