#457EDB
Closest named color: Dark Sky Blue (#448EE4). oklch(60.1% 0.154 259.7), rgb(69, 126, 219).
Aa
Black text reads best on this color (5.26:1).
About this color
#457EDB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.154 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.043 away. Black text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.26:1 |
| White text | 3.99:1 |
Values
| HEX | #457EDB |
| RGB | rgb(69, 126, 219) |
| HSL | hsl(217, 68%, 56%) |
| OKLCH | oklch(60.1% 0.154 259.7) |
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 #457EDB | 3.99:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #457EDB | 5.26:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #457EDB text on white | 3.99:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #457EDB text on black | 5.26:1 | AA | Lc -34.7 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A4C2F2
oklch(80.9% 0.076 259.7)
-
Step 400
400
#73A1EB
oklch(70.7% 0.12 259.6)
-
Step 500
500 (this color)
#457EDB
oklch(60.1% 0.154 259.7)
-
Step 600
600
#316FD3
oklch(55.6% 0.167 259.6)
-
Step 700
700
#245CB7
oklch(49.1% 0.156 259.8)
-
Step 800
800
#1F4C94
oklch(42.7% 0.129 259.5)
-
Step 900
900
#1F4076
oklch(37.7% 0.1 259.8)
-
Step 950
950
#132645
oklch(27.1% 0.063 259.7)
#457EDB 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) | #5287DF | 0.029 |
| Deuteranopia (no green cones) | #3879D9 | 0.019 |
| Tritanopia (no blue cones) | #0094A2 | 0.124 |
| Achromatopsia (no color) | #7F7F7F | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #457EDB
#457EDB
oklch(60.1% 0.154 259.7)
- #A77600
#A77600
oklch(60% 0.124 79.6)
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 #457EDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.043
- Water Blue #0E87CC ΔE 0.046
- Windows Blue #3778BF ΔE 0.047
- Soft Blue #6488EA ΔE 0.049
- Royal Blue #4169E1 ΔE 0.057
- Clear Blue #247AFD ΔE 0.057
- Cool Blue #4984B8 ΔE 0.060
- Cornflower #6A79F7 ΔE 0.061
Use #457EDB 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.