#356BA1
Closest named color: Muted Blue (#3B719F). oklch(51.7% 0.103 250.5), rgb(53, 107, 161).
Aa
White text reads best on this color (5.57:1).
About this color
#356BA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.103 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.020 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #356BA1 |
| RGB | rgb(53, 107, 161) |
| HSL | hsl(210, 50%, 42%) |
| OKLCH | oklch(51.7% 0.103 250.5) |
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 #356BA1 | 5.57:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #356BA1 | 3.76:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #356BA1 text on white | 5.57:1 | AA | Lc 77.6 | Fine for body text |
| #356BA1 text on black | 3.76:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E0
oklch(80.9% 0.049 249.4)
-
Step 400
400
#7BA5D1
oklch(70.8% 0.079 250.1)
-
Step 500
500
#588DC5
oklch(63% 0.102 251)
-
Step 600
600
#3C77B2
oklch(55.7% 0.111 250.5)
-
Step 700
700 (this color)
#356BA1
oklch(51.7% 0.103 250.5)
-
Step 800
800
#27517C
oklch(42.6% 0.086 251)
-
Step 900
900
#244464
oklch(37.8% 0.067 250)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#356BA1 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) | #536EA3 | 0.035 |
| Deuteranopia (no green cones) | #4463A0 | 0.025 |
| Tritanopia (no blue cones) | #00787E | 0.082 |
| Achromatopsia (no color) | #686868 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356BA1
#356BA1
oklch(51.7% 0.103 250.5)
- #8D5C14
#8D5C14
oklch(51.7% 0.104 70.5)
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 #356BA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.020
- French Blue #436BAD ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.026
- Ocean Blue #03719C ΔE 0.030
- Mid Blue #276AB3 ΔE 0.031
- Denim #3B638C ΔE 0.036
- Peacock Blue #016795 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.038
Use #356BA1 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.