#357ED7
Closest named color: Water Blue (#0E87CC). oklch(59.2% 0.154 255.3), rgb(53, 126, 215).
Aa
Black text reads best on this color (5.11:1).
About this color
#357ED7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.154 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.035 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #357ED7 |
| RGB | rgb(53, 126, 215) |
| HSL | hsl(213, 67%, 53%) |
| OKLCH | oklch(59.2% 0.154 255.3) |
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 #357ED7 | 4.10:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #357ED7 | 5.11:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #357ED7 text on white | 4.10:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #357ED7 text on black | 5.11:1 | AA | Lc -33.9 | 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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A3C3ED
oklch(80.8% 0.069 255.4)
-
Step 400
400
#70A3E5
oklch(70.7% 0.112 255.3)
-
Step 500
500
#498BDD
oklch(63.2% 0.141 255)
-
Step 600
600 (this color)
#357ED7
oklch(59.2% 0.154 255.3)
-
Step 700
700
#1B60AF
oklch(49.1% 0.143 255)
-
Step 800
800
#194F8E
oklch(42.8% 0.118 254.9)
-
Step 900
900
#1B4271
oklch(37.7% 0.092 254.8)
-
Step 950
950
#112742
oklch(27% 0.058 254.7)
#357ED7 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) | #5385DA | 0.035 |
| Deuteranopia (no green cones) | #3776D5 | 0.021 |
| Tritanopia (no blue cones) | #0093A0 | 0.118 |
| Achromatopsia (no color) | #7D7D7D | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #357ED7
#357ED7
oklch(59.2% 0.154 255.3)
- #A87100
#A87100
oklch(59.1% 0.125 75.2)
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 #357ED7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.035
- Windows Blue #3778BF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.049
- Cool Blue #4984B8 ΔE 0.056
- Royal Blue #4169E1 ΔE 0.058
- Steel Blue #4682B4 ΔE 0.059
- Clear Blue #247AFD ΔE 0.060
- Soft Blue #6488EA ΔE 0.062
Use #357ED7 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.