#457EC9
Closest named color: Windows Blue (#3778BF). oklch(59% 0.13 256), rgb(69, 126, 201).
Aa
Black text reads best on this color (5.08:1).
About this color
#457EC9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.130 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.026 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.08:1 |
| White text | 4.13:1 |
Values
| HEX | #457EC9 |
| RGB | rgb(69, 126, 201) |
| HSL | hsl(214, 55%, 53%) |
| OKLCH | oklch(59% 0.13 256) |
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 #457EC9 | 4.13:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #457EC9 | 5.08:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #457EC9 text on white | 4.13:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #457EC9 text on black | 5.08:1 | AA | Lc -33.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A8C3E7
oklch(80.9% 0.059 255.7)
-
Step 400
400
#7AA3DB
oklch(70.8% 0.094 256.4)
-
Step 500
500
#578BD1
oklch(63.1% 0.12 256.2)
-
Step 600
600 (this color)
#457EC9
oklch(59% 0.13 256)
-
Step 700
700
#2D61A4
oklch(49.2% 0.121 255.9)
-
Step 800
800
#264F85
oklch(42.7% 0.101 256.2)
-
Step 900
900
#24426A
oklch(37.6% 0.078 256.2)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#457EC9 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) | #5D83CC | 0.030 |
| Deuteranopia (no green cones) | #4A77C7 | 0.019 |
| Tritanopia (no blue cones) | #008F9A | 0.104 |
| Achromatopsia (no color) | #7D7D7D | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #457EC9
#457EC9
oklch(59% 0.13 256)
- #A77100
#A77100
oklch(59% 0.124 75.7)
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 #457EC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Water Blue #0E87CC ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
- Steel Blue #4682B4 ΔE 0.037
- Off Blue #5684AE ΔE 0.052
- Nice Blue #107AB0 ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.054
- Flat Blue #3C73A8 ΔE 0.057
Use #457EC9 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.