#356F9D
Closest named color: Muted Blue (#3B719F). oklch(52.4% 0.095 245), rgb(53, 111, 157).
Aa
White text reads best on this color (5.36:1).
About this color
#356F9D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.095 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.009 away. White text reads best on it, at 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #356F9D |
| RGB | rgb(53, 111, 157) |
| HSL | hsl(207, 50%, 41%) |
| OKLCH | oklch(52.4% 0.095 245) |
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 #356F9D | 5.36:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #356F9D | 3.91:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #356F9D text on white | 5.36:1 | AA | Lc 76.5 | Fine for body text |
| #356F9D text on black | 3.91:1 | AA large text | Lc -25.2 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#AAC4DB
oklch(80.8% 0.043 245.1)
-
Step 400
400
#7DA6C9
oklch(70.8% 0.068 244.7)
-
Step 500
500
#5A8FBB
oklch(63.1% 0.087 244.9)
-
Step 600
600 (this color)
#356F9D
oklch(52.4% 0.095 245)
-
Step 700
700
#30658F
oklch(49% 0.088 245)
-
Step 800
800
#295374
oklch(42.8% 0.072 244.4)
-
Step 900
900
#26455E
oklch(37.8% 0.057 244.4)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#356F9D 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) | #5B709F | 0.042 |
| Deuteranopia (no green cones) | #4C669C | 0.032 |
| Tritanopia (no blue cones) | #007A7F | 0.071 |
| Achromatopsia (no color) | #6B6B6B | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356F9D
#356F9D
oklch(52.4% 0.095 245)
- #8F5D27
#8F5D27
oklch(52.3% 0.095 64.8)
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 #356F9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.009
- Flat Blue #3C73A8 ΔE 0.021
- Ocean Blue #03719C ΔE 0.024
- Dull Blue #49759C ΔE 0.029
- Sea Blue #047495 ΔE 0.032
- French Blue #436BAD ΔE 0.034
- Denim #3B638C ΔE 0.039
- Nice Blue #107AB0 ΔE 0.039
Use #356F9D 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.