#356E8F
Closest named color: Sea Blue (#047495). oklch(51.4% 0.079 236.5), rgb(53, 110, 143).
Aa
White text reads best on this color (5.55:1).
About this color
#356E8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.079 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.026 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #356E8F |
| RGB | rgb(53, 110, 143) |
| HSL | hsl(202, 46%, 38%) |
| OKLCH | oklch(51.4% 0.079 236.5) |
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 #356E8F | 5.55:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #356E8F | 3.77:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #356E8F text on white | 5.55:1 | AA | Lc 77.6 | Fine for body text |
| #356E8F text on black | 3.77:1 | AA large text | Lc -24.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7CA7C2
oklch(70.7% 0.061 236.3)
-
Step 500
500
#5991B3
oklch(63.1% 0.078 236.5)
-
Step 600
600
#3C7B9F
oklch(55.7% 0.086 236.2)
-
Step 700
700 (this color)
#356E8F
oklch(51.4% 0.079 236.5)
-
Step 800
800
#27546E
oklch(42.6% 0.066 236.5)
-
Step 900
900
#254659
oklch(37.8% 0.051 235.5)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#356E8F 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) | #5F6D91 | 0.048 |
| Deuteranopia (no green cones) | #52648E | 0.040 |
| Tritanopia (no blue cones) | #007779 | 0.057 |
| Achromatopsia (no color) | #686868 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356E8F
#356E8F
oklch(51.4% 0.079 236.5)
- #8A5B38
#8A5B38
oklch(51.5% 0.079 56.6)
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 #356E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.026
- Muted Blue #3B719F ΔE 0.027
- Ocean Blue #03719C ΔE 0.028
- Denim #3B638C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Peacock Blue #016795 ΔE 0.039
- Ocean #017B92 ΔE 0.041
Use #356E8F 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.