#356F8E
Closest named color: Sea Blue (#047495). oklch(51.6% 0.078 234.4), rgb(53, 111, 142).
Aa
White text reads best on this color (5.50:1).
About this color
#356F8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.078 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.025 away. White text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #356F8E |
| RGB | rgb(53, 111, 142) |
| HSL | hsl(201, 46%, 38%) |
| OKLCH | oklch(51.6% 0.078 234.4) |
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 #356F8E | 5.50:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #356F8E | 3.81:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #356F8E text on white | 5.50:1 | AA | Lc 77.3 | Fine for body text |
| #356F8E text on black | 3.81:1 | AA large text | Lc -24.5 | 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
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#AAC5D6
oklch(80.9% 0.038 235.6)
-
Step 400
400
#7CA7C1
oklch(70.7% 0.06 235.3)
-
Step 500
500
#5891B1
oklch(63% 0.077 234.4)
-
Step 600
600
#3C7B9D
oklch(55.6% 0.084 234.6)
-
Step 700
700 (this color)
#356F8E
oklch(51.6% 0.078 234.4)
-
Step 800
800
#27556D
oklch(42.8% 0.064 233.8)
-
Step 900
900
#254658
oklch(37.7% 0.05 234)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#356F8E 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) | #606E8F | 0.049 |
| Deuteranopia (no green cones) | #54658E | 0.042 |
| Tritanopia (no blue cones) | #007779 | 0.054 |
| Achromatopsia (no color) | #696969 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356F8E
#356F8E
oklch(51.6% 0.078 234.4)
- #8B5B3B
#8B5B3B
oklch(51.6% 0.078 53.8)
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 #356F8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.025
- Muted Blue #3B719F ΔE 0.028
- Ocean Blue #03719C ΔE 0.030
- Metallic Blue #4F738E ΔE 0.031
- Dull Blue #49759C ΔE 0.035
- Denim #3B638C ΔE 0.035
- Ocean #017B92 ΔE 0.038
- Peacock Blue #016795 ΔE 0.042
Use #356F8E 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.