#4583A7
Closest named color: Off Blue (#5684AE). oklch(58.4% 0.085 236.2), rgb(69, 131, 167).
Aa
Black text reads best on this color (5.05:1).
About this color
#4583A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.085 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.021 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #4583A7 |
| RGB | rgb(69, 131, 167) |
| HSL | hsl(202, 42%, 46%) |
| OKLCH | oklch(58.4% 0.085 236.2) |
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 #4583A7 | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #4583A7 | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #4583A7 text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #4583A7 text on black | 5.05:1 | AA | Lc -33.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#AAC5D6
oklch(80.9% 0.038 235.6)
-
Step 400
400
#7CA7C2
oklch(70.7% 0.061 236.3)
-
Step 500
500
#5991B3
oklch(63.1% 0.078 236.5)
-
Step 600
600 (this color)
#4583A7
oklch(58.4% 0.085 236.2)
-
Step 700
700
#2E6787
oklch(49% 0.079 236.1)
-
Step 800
800
#27546E
oklch(42.6% 0.066 236.5)
-
Step 900
900
#254659
oklch(37.8% 0.051 235.5)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#4583A7 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) | #7282A9 | 0.051 |
| Deuteranopia (no green cones) | #6578A6 | 0.044 |
| Tritanopia (no blue cones) | #008C8F | 0.062 |
| Achromatopsia (no color) | #7C7C7C | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4583A7
#4583A7
oklch(58.4% 0.085 236.2)
- #A26E48
#A26E48
oklch(58.4% 0.085 56.3)
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 #4583A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.021
- Steel Blue #4682B4 ΔE 0.022
- Cerulean #457B9D ΔE 0.025
- Stormy Blue #507B9C ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.026
- Cool Blue #4984B8 ΔE 0.027
- Blue NCS #118AB2 ΔE 0.032
- Teal Blue #01889F ΔE 0.039
Use #4583A7 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.