#356BC5
Closest named color: Mid Blue (#276AB3). oklch(53.9% 0.152 260), rgb(53, 107, 197).
Aa
White text reads best on this color (5.17:1).
About this color
#356BC5 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.152 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.031 away. White text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.06:1 |
| White text | 5.17:1 |
Values
| HEX | #356BC5 |
| RGB | rgb(53, 107, 197) |
| HSL | hsl(218, 58%, 49%) |
| OKLCH | oklch(53.9% 0.152 260) |
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 #356BC5 | 5.17:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #356BC5 | 4.06:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #356BC5 text on white | 5.17:1 | AA | Lc 75.2 | Fine for body text |
| #356BC5 text on black | 4.06:1 | AA large text | Lc -26.5 | 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 600.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2ED
oklch(80.9% 0.068 259.6)
-
Step 400
400
#78A1E5
oklch(70.7% 0.11 260.2)
-
Step 500
500
#5588DD
oklch(63.1% 0.14 260.1)
-
Step 600
600 (this color)
#356BC5
oklch(53.9% 0.152 260)
-
Step 700
700
#2C5DAF
oklch(49% 0.141 260.1)
-
Step 800
800
#264D8E
oklch(42.8% 0.117 260)
-
Step 900
900
#234071
oklch(37.6% 0.091 260.3)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#356BC5 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) | #3C74C8 | 0.026 |
| Deuteranopia (no green cones) | #1D67C3 | 0.022 |
| Tritanopia (no blue cones) | #00808E | 0.120 |
| Achromatopsia (no color) | #6D6D6D | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356BC5
#356BC5
oklch(53.9% 0.152 260)
- #906600
#906600
oklch(54% 0.112 80.3)
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 #356BC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.031
- Windows Blue #3778BF ΔE 0.039
- French Blue #436BAD ΔE 0.039
- Royal Blue #4169E1 ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.055
- Nice Blue #107AB0 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.064
- Cerulean Blue #056EEE ΔE 0.064
Use #356BC5 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.