#353BB1
Closest named color: Sapphire (#2138AB). oklch(42.8% 0.183 273.4), rgb(53, 59, 177).
Aa
White text reads best on this color (8.70:1).
About this color
#353BB1 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.183 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 8.70:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #353BB1 |
| RGB | rgb(53, 59, 177) |
| HSL | hsl(237, 54%, 45%) |
| OKLCH | oklch(42.8% 0.183 273.4) |
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 #353BB1 | 8.70:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #353BB1 | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #353BB1 text on white | 8.70:1 | AAA | Lc 89.2 | Fine for body text |
| #353BB1 text on black | 2.41:1 | Fails | Lc -13.0 | Not readable |
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 800.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6679FF
oklch(63.1% 0.198 273.3)
-
Step 600
600
#4F57FB
oklch(55.6% 0.239 273.4)
-
Step 700
700
#4145DB
oklch(49.1% 0.222 273.5)
-
Step 800
800 (this color)
#353BB1
oklch(42.8% 0.183 273.4)
-
Step 900
900
#2C348C
oklch(37.6% 0.144 273.3)
-
Step 950
950
#1A2052
oklch(27.1% 0.091 273.6)
#353BB1 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) | #0051B5 | 0.056 |
| Deuteranopia (no green cones) | #0045AF | 0.041 |
| Tritanopia (no blue cones) | #005A71 | 0.146 |
| Achromatopsia (no color) | #4B4B4B | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353BB1
#353BB1
oklch(42.8% 0.183 273.4)
- #604E00
#604E00
oklch(43% 0.088 93.6)
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 #353BB1, closest first.
No curated palette has a color within ΔE 0.04 of #353BB1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Majorelle Blue #3F37C9 ΔE 0.040
- Blue Blue #2242C7 ΔE 0.042
- Blueberry #464196 ΔE 0.053
- Indigo Blue #3A18B1 ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Blurple #5539CC ΔE 0.064
- Cobalt #1E488F ΔE 0.068
Use #353BB1 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.