#357CE5
Closest named color: Clear Blue (#247AFD). oklch(59.7% 0.175 258.5), rgb(53, 124, 229).
Aa
Black text reads best on this color (5.16:1).
About this color
#357CE5 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.175 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.038 away. Black text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #357CE5 |
| RGB | rgb(53, 124, 229) |
| HSL | hsl(216, 77%, 55%) |
| OKLCH | oklch(59.7% 0.175 258.5) |
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 #357CE5 | 4.06:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #357CE5 | 5.16:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #357CE5 text on white | 4.06:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #357CE5 text on black | 5.16:1 | AA | Lc -34.3 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBF9
oklch(88.5% 0.047 257.3)
-
Step 300
300
#9FC2F8
oklch(80.8% 0.086 258.9)
-
Step 400
400
#6AA1F5
oklch(70.7% 0.137 258.6)
-
Step 500
500 (this color)
#357CE5
oklch(59.7% 0.175 258.5)
-
Step 600
600
#1C6DDF
oklch(55.5% 0.19 258.6)
-
Step 700
700
#0D5BC2
oklch(49.2% 0.176 258.4)
-
Step 800
800
#104B9D
oklch(42.8% 0.146 258.4)
-
Step 900
900
#163F7D
oklch(37.7% 0.115 258.9)
-
Step 950
950
#0E2649
oklch(27.1% 0.072 258)
#357CE5 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) | #4486E9 | 0.031 |
| Deuteranopia (no green cones) | #1676E3 | 0.025 |
| Tritanopia (no blue cones) | #0095A5 | 0.135 |
| Achromatopsia (no color) | #7E7E7E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #357CE5
#357CE5
oklch(59.7% 0.175 258.5)
- #A77500
#A77500
oklch(59.8% 0.124 78.8)
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 #357CE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.038
- Royal Blue #4169E1 ΔE 0.047
- Cerulean Blue #056EEE ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.052
- Water Blue #0E87CC ΔE 0.055
- Windows Blue #3778BF ΔE 0.058
- Soft Blue #6488EA ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.059
Use #357CE5 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.