#4590CC
Closest named color: Faded Blue (#658CBB). oklch(63.2% 0.117 245.4), rgb(69, 144, 204).
Aa
Black text reads best on this color (6.11:1).
About this color
#4590CC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.117 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.037 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #4590CC |
| RGB | rgb(69, 144, 204) |
| HSL | hsl(207, 57%, 54%) |
| OKLCH | oklch(63.2% 0.117 245.4) |
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 #4590CC | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #4590CC | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #4590CC text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #4590CC text on black | 6.11:1 | AA | Lc -40.1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A2C5E4
oklch(80.8% 0.058 245.3)
-
Step 400
400
#6FA7D6
oklch(70.8% 0.091 244.9)
-
Step 500
500 (this color)
#4590CC
oklch(63.2% 0.117 245.4)
-
Step 600
600
#1F79B8
oklch(55.6% 0.127 244.9)
-
Step 700
700
#0F659F
oklch(49% 0.119 245.6)
-
Step 800
800
#125381
oklch(42.7% 0.098 245.3)
-
Step 900
900
#184567
oklch(37.7% 0.076 244.8)
-
Step 950
950
#10293D
oklch(27.2% 0.049 245.1)
#4590CC 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) | #7592CF | 0.051 |
| Deuteranopia (no green cones) | #6385CB | 0.038 |
| Tritanopia (no blue cones) | #009EA5 | 0.087 |
| Achromatopsia (no color) | #8A8A8A | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4590CC
#4590CC
oklch(63.2% 0.117 245.4)
- #BA7A32
#BA7A32
oklch(63.3% 0.117 65.6)
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 #4590CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.040
- Water Blue #0E87CC ΔE 0.041
- Steel Blue #4682B4 ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.049
- Off Blue #5684AE ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.053
Use #4590CC 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.