#356AA4
Closest named color: French Blue (#436BAD). oklch(51.6% 0.108 252.5), rgb(53, 106, 164).
Aa
White text reads best on this color (5.60:1).
About this color
#356AA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.108 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.021 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #356AA4 |
| RGB | rgb(53, 106, 164) |
| HSL | hsl(211, 51%, 43%) |
| OKLCH | oklch(51.6% 0.108 252.5) |
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 #356AA4 | 5.60:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #356AA4 | 3.74:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #356AA4 text on white | 5.60:1 | AA | Lc 77.8 | Fine for body text |
| #356AA4 text on black | 3.74:1 | AA large text | Lc -24.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#A9C3E2
oklch(80.8% 0.052 253)
-
Step 400
400
#7AA4D4
oklch(70.7% 0.084 252.3)
-
Step 500
500
#588DC9
oklch(63.2% 0.107 252.6)
-
Step 600
600
#3C76B5
oklch(55.6% 0.116 252.3)
-
Step 700
700 (this color)
#356AA4
oklch(51.6% 0.108 252.5)
-
Step 800
800
#27517F
oklch(42.8% 0.09 252.5)
-
Step 900
900
#244366
oklch(37.7% 0.071 252.7)
-
Step 950
950
#16283C
oklch(27.2% 0.044 252.1)
#356AA4 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) | #506DA6 | 0.031 |
| Deuteranopia (no green cones) | #4163A3 | 0.021 |
| Tritanopia (no blue cones) | #00787F | 0.086 |
| Achromatopsia (no color) | #686868 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356AA4
#356AA4
oklch(51.6% 0.108 252.5)
- #8D5C05
#8D5C05
oklch(51.6% 0.108 72.7)
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 #356AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.021
- Muted Blue #3B719F ΔE 0.025
- Mid Blue #276AB3 ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.028
- Ocean Blue #03719C ΔE 0.035
- Dusky Blue #475F94 ΔE 0.038
- Denim #3B638C ΔE 0.039
- Peacock Blue #016795 ΔE 0.039
Use #356AA4 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.