#355EA8
Closest named color: Mid Blue (#276AB3). oklch(49.1% 0.127 261.2), rgb(53, 94, 168).
Aa
White text reads best on this color (6.32:1).
About this color
#355EA8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.127 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.035 away. White text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.31:1 |
| White text | 6.32:1 |
Values
| HEX | #355EA8 |
| RGB | rgb(53, 94, 168) |
| HSL | hsl(219, 52%, 43%) |
| OKLCH | oklch(49.1% 0.127 261.2) |
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 #355EA8 | 6.32:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #355EA8 | 3.31:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #355EA8 text on white | 6.32:1 | AA | Lc 81.2 | Fine for body text |
| #355EA8 text on black | 3.31:1 | AA large text | Lc -20.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC2E9
oklch(81% 0.061 261)
-
Step 400
400
#7EA1DE
oklch(70.7% 0.098 261.2)
-
Step 500
500
#5D88D5
oklch(63% 0.126 261.3)
-
Step 600
600
#4371C3
oklch(55.7% 0.137 261.1)
-
Step 700
700 (this color)
#355EA8
oklch(49.1% 0.127 261.2)
-
Step 800
800
#2C4D88
oklch(42.7% 0.106 261.1)
-
Step 900
900
#28416D
oklch(37.8% 0.082 261)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#355EA8 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) | #3A65AB | 0.021 |
| Deuteranopia (no green cones) | #275BA6 | 0.017 |
| Tritanopia (no blue cones) | #006F7B | 0.103 |
| Achromatopsia (no color) | #606060 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355EA8
#355EA8
oklch(49.1% 0.127 261.2)
- #7E5900
#7E5900
oklch(49% 0.101 80.5)
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 #355EA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.038
- French Blue #436BAD ΔE 0.041
- Denim #3B638C ΔE 0.051
- Peacock Blue #016795 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
Use #355EA8 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.