#355ABC
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.16 265.4), rgb(53, 90, 188).
Aa
White text reads best on this color (6.28:1).
About this color
#355ABC is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.160 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.047 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.34:1 |
| White text | 6.28:1 |
Values
| HEX | #355ABC |
| RGB | rgb(53, 90, 188) |
| HSL | hsl(224, 56%, 47%) |
| OKLCH | oklch(49.7% 0.16 265.4) |
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 #355ABC | 6.28:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #355ABC | 3.34:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #355ABC text on white | 6.28:1 | AA | Lc 80.9 | Fine for body text |
| #355ABC text on black | 3.34:1 | AA large text | Lc -21.0 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A9C0F4
oklch(80.9% 0.078 266.1)
-
Step 400
400
#7B9EEE
oklch(70.7% 0.124 265.4)
-
Step 500
500
#5A84E9
oklch(63.2% 0.159 265.2)
-
Step 600
600
#416BD7
oklch(55.7% 0.172 265.2)
-
Step 700
700 (this color)
#355ABC
oklch(49.7% 0.16 265.4)
-
Step 800
800
#2B4997
oklch(42.8% 0.133 265.3)
-
Step 900
900
#263E78
oklch(37.7% 0.103 265)
-
Step 950
950
#172546
oklch(27.1% 0.064 265.1)
#355ABC 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) | #1967BF | 0.035 |
| Deuteranopia (no green cones) | #005ABA | 0.030 |
| Tritanopia (no blue cones) | #007182 | 0.128 |
| Achromatopsia (no color) | #606060 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355ABC
#355ABC
oklch(49.7% 0.16 265.4)
- #7C5D00
#7C5D00
oklch(49.7% 0.102 85.9)
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 #355ABC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.055
- French Blue #436BAD ΔE 0.059
- Iris #6258C4 ΔE 0.059
- Blue Blue #2242C7 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.068
- Royal Blue #4169E1 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.070
Use #355ABC 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.