#457FDA
Closest named color: Dark Sky Blue (#448EE4). oklch(60.2% 0.152 259.1), rgb(69, 127, 218).
Aa
Black text reads best on this color (5.30:1).
About this color
#457FDA is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.152 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.041 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #457FDA |
| RGB | rgb(69, 127, 218) |
| HSL | hsl(217, 67%, 56%) |
| OKLCH | oklch(60.2% 0.152 259.1) |
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 #457FDA | 3.96:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #457FDA | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #457FDA text on white | 3.96:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #457FDA text on black | 5.30:1 | AA | Lc -35.0 | 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
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F1
oklch(80.8% 0.074 259.3)
-
Step 400
400
#73A1EA
oklch(70.6% 0.119 259.3)
-
Step 500
500 (this color)
#457FDA
oklch(60.2% 0.152 259.1)
-
Step 600
600
#3070D2
oklch(55.7% 0.165 258.9)
-
Step 700
700
#235DB6
oklch(49.2% 0.154 259.1)
-
Step 800
800
#1F4C93
oklch(42.7% 0.127 259.3)
-
Step 900
900
#1E4075
oklch(37.6% 0.099 259)
-
Step 950
950
#132645
oklch(27.1% 0.063 259.7)
#457FDA 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) | #5487DE | 0.028 |
| Deuteranopia (no green cones) | #3C79D8 | 0.019 |
| Tritanopia (no blue cones) | #0094A2 | 0.121 |
| Achromatopsia (no color) | #808080 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #457FDA
#457FDA
oklch(60.2% 0.152 259.1)
- #A87600
#A87600
oklch(60.1% 0.125 79)
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 #457FDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.041
- Water Blue #0E87CC ΔE 0.043
- Windows Blue #3778BF ΔE 0.046
- Soft Blue #6488EA ΔE 0.048
- Cool Blue #4984B8 ΔE 0.057
- Clear Blue #247AFD ΔE 0.060
- Royal Blue #4169E1 ΔE 0.060
- Steel Blue #4682B4 ΔE 0.061
Use #457FDA 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.