#4590BB
Closest named color: Faded Blue (#658CBB). oklch(62.4% 0.099 236.5), rgb(69, 144, 187).
Aa
Black text reads best on this color (5.95:1).
About this color
#4590BB is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.099 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.032 away. Black text reads best on it, at 5.95:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #4590BB |
| RGB | rgb(69, 144, 187) |
| HSL | hsl(202, 46%, 50%) |
| OKLCH | oklch(62.4% 0.099 236.5) |
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 #4590BB | 3.52:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #4590BB | 5.95:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #4590BB text on white | 3.52:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #4590BB text on black | 5.95:1 | AA | Lc -39.1 | 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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CB
oklch(70.7% 0.077 237.3)
-
Step 500
500 (this color)
#4590BB
oklch(62.4% 0.099 236.5)
-
Step 600
600
#237CAA
oklch(55.7% 0.107 236.6)
-
Step 700
700
#136892
oklch(49.1% 0.1 236.9)
-
Step 800
800
#155576
oklch(42.7% 0.082 236.5)
-
Step 900
900
#1A465F
oklch(37.6% 0.064 237)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#4590BB 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) | #7C8FBD | 0.059 |
| Deuteranopia (no green cones) | #6C83BA | 0.050 |
| Tritanopia (no blue cones) | #009B9E | 0.069 |
| Achromatopsia (no color) | #888888 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4590BB
#4590BB
oklch(62.4% 0.099 236.5)
- #B47749
#B47749
oklch(62.3% 0.098 56.7)
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 #4590BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.033
- Cool Blue #4984B8 ΔE 0.033
- Off Blue #5684AE ΔE 0.035
- Blue NCS #118AB2 ΔE 0.038
- Steel Blue #4682B4 ΔE 0.039
- Water Blue #0E87CC ΔE 0.051
- Silver Lake Blue #778DA9 ΔE 0.055
Use #4590BB 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.