#457CAC
Closest named color: Steel Blue (#4682B4). oklch(56.9% 0.095 246.7), rgb(69, 124, 172).
Aa
Black text reads best on this color (4.73:1).
About this color
#457CAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.095 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.019 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #457CAC |
| RGB | rgb(69, 124, 172) |
| HSL | hsl(208, 43%, 47%) |
| OKLCH | oklch(56.9% 0.095 246.7) |
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 #457CAC | 4.43:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #457CAC | 4.73:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #457CAC text on white | 4.43:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #457CAC text on black | 4.73:1 | AA | Lc -31.1 | 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
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DB
oklch(80.9% 0.042 246.1)
-
Step 400
400
#7EA5C9
oklch(70.7% 0.068 246.8)
-
Step 500
500
#5C8EBC
oklch(63% 0.088 247.4)
-
Step 600
600 (this color)
#457CAC
oklch(56.9% 0.095 246.7)
-
Step 700
700
#336590
oklch(49.2% 0.088 246.7)
-
Step 800
800
#2B5275
oklch(42.7% 0.073 247.5)
-
Step 900
900
#27445E
oklch(37.6% 0.057 247)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#457CAC 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) | #677DAE | 0.039 |
| Deuteranopia (no green cones) | #5A73AB | 0.032 |
| Tritanopia (no blue cones) | #00878D | 0.075 |
| Achromatopsia (no color) | #787878 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #457CAC
#457CAC
oklch(56.9% 0.095 246.7)
- #9D6B34
#9D6B34
oklch(56.9% 0.096 66.3)
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 #457CAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.019
- Cerulean #457B9D ΔE 0.023
- Stormy Blue #507B9C ΔE 0.026
- Cool Blue #4984B8 ΔE 0.027
- Dull Blue #49759C ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.028
- Off Blue #5684AE ΔE 0.031
- Nice Blue #107AB0 ΔE 0.034
Use #457CAC 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.