#4585A3
Closest named color: Off Blue (#5684AE). oklch(58.7% 0.08 230.5), rgb(69, 133, 163).
Aa
Black text reads best on this color (5.13:1).
About this color
#4585A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.080 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.026 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #4585A3 |
| RGB | rgb(69, 133, 163) |
| HSL | hsl(199, 41%, 45%) |
| OKLCH | oklch(58.7% 0.08 230.5) |
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 #4585A3 | 4.08:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #4585A3 | 5.13:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #4585A3 text on white | 4.08:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #4585A3 text on black | 5.13:1 | AA | Lc -33.8 | 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
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#AAC5D4
oklch(80.8% 0.036 232.2)
-
Step 400
400
#7CA8BE
oklch(70.8% 0.057 230.2)
-
Step 500
500
#5892AE
oklch(63.1% 0.074 230.4)
-
Step 600
600 (this color)
#4585A3
oklch(58.7% 0.08 230.5)
-
Step 700
700
#2D6883
oklch(49% 0.075 230.8)
-
Step 800
800
#27556A
oklch(42.7% 0.061 230.2)
-
Step 900
900
#254656
oklch(37.6% 0.047 230.9)
-
Step 950
950
#162933
oklch(26.9% 0.031 232.5)
#4585A3 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) | #7683A5 | 0.056 |
| Deuteranopia (no green cones) | #6979A3 | 0.050 |
| Tritanopia (no blue cones) | #008D8F | 0.056 |
| Achromatopsia (no color) | #7D7D7D | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4585A3
#4585A3
oklch(58.7% 0.08 230.5)
- #A36E50
#A36E50
oklch(58.7% 0.08 50.1)
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 #4585A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.028
- Stormy Blue #507B9C ΔE 0.028
- Cerulean #457B9D ΔE 0.029
- Steel Blue #4682B4 ΔE 0.031
- Blue NCS #118AB2 ΔE 0.033
- Teal Blue #01889F ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
Use #4585A3 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.