#356CBD
Closest named color: Mid Blue (#276AB3). oklch(53.6% 0.14 258.2), rgb(53, 108, 189).
Aa
White text reads best on this color (5.20:1).
About this color
#356CBD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.140 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.021 away. White text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #356CBD |
| RGB | rgb(53, 108, 189) |
| HSL | hsl(216, 56%, 47%) |
| OKLCH | oklch(53.6% 0.14 258.2) |
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 #356CBD | 5.20:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #356CBD | 4.03:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #356CBD text on white | 5.20:1 | AA | Lc 75.5 | Fine for body text |
| #356CBD text on black | 4.03:1 | AA large text | Lc -26.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C2EA
oklch(80.8% 0.064 258.9)
-
Step 400
400
#79A2DF
oklch(70.7% 0.101 258.1)
-
Step 500
500
#568AD6
oklch(63.1% 0.128 257.8)
-
Step 600
600 (this color)
#356CBD
oklch(53.6% 0.14 258.2)
-
Step 700
700
#2D5FA9
oklch(49% 0.13 258.3)
-
Step 800
800
#264E89
oklch(42.7% 0.108 258.2)
-
Step 900
900
#24416D
oklch(37.6% 0.084 258.5)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#356CBD 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) | #4573C0 | 0.027 |
| Deuteranopia (no green cones) | #2D67BB | 0.016 |
| Tritanopia (no blue cones) | #007F8B | 0.110 |
| Achromatopsia (no color) | #6D6D6D | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356CBD
#356CBD
oklch(53.6% 0.14 258.2)
- #906400
#906400
oklch(53.6% 0.111 78.5)
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 #356CBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.021
- French Blue #436BAD ΔE 0.027
- Windows Blue #3778BF ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.043
- Nice Blue #107AB0 ΔE 0.050
- Muted Blue #3B719F ΔE 0.053
- Royal Blue #4169E1 ΔE 0.059
- Ocean Blue #03719C ΔE 0.064
Use #356CBD 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.