#457EA8
Closest named color: Cerulean (#457B9D). oklch(57.2% 0.089 242.4), rgb(69, 126, 168).
Aa
Black text reads best on this color (4.80:1).
About this color
#457EA8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.089 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.017 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.80:1 |
| White text | 4.37:1 |
Values
| HEX | #457EA8 |
| RGB | rgb(69, 126, 168) |
| HSL | hsl(205, 42%, 46%) |
| OKLCH | oklch(57.2% 0.089 242.4) |
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 #457EA8 | 4.37:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #457EA8 | 4.80:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #457EA8 text on white | 4.37:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #457EA8 text on black | 4.80:1 | AA | Lc -31.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ABC4D9
oklch(80.8% 0.04 243.6)
-
Step 400
400
#7EA6C6
oklch(70.8% 0.064 242.9)
-
Step 500
500
#5C8FB7
oklch(63% 0.082 243.2)
-
Step 600
600 (this color)
#457EA8
oklch(57.2% 0.089 242.4)
-
Step 700
700
#32668C
oklch(49.2% 0.083 242.7)
-
Step 800
800
#2A5371
oklch(42.6% 0.068 242.4)
-
Step 900
900
#27455C
oklch(37.8% 0.053 243)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#457EA8 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) | #6B7EAA | 0.044 |
| Deuteranopia (no green cones) | #5E74A7 | 0.037 |
| Tritanopia (no blue cones) | #00888C | 0.070 |
| Achromatopsia (no color) | #797979 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #457EA8
#457EA8
oklch(57.2% 0.089 242.4)
- #9D6C3E
#9D6C3E
oklch(57.3% 0.088 62.7)
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 #457EA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.017
- Steel Blue #4682B4 ΔE 0.020
- Stormy Blue #507B9C ΔE 0.020
- Off Blue #5684AE ΔE 0.027
- Dull Blue #49759C ΔE 0.028
- Cool Blue #4984B8 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.035
Use #457EA8 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.