#4284AB
Closest named color: Steel Blue (#4682B4). oklch(58.7% 0.09 237), rgb(66, 132, 171).
Aa
Black text reads best on this color (5.12:1).
About this color
#4284AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.090 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.017 away. Black text reads best on it, at 5.12:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.12:1 |
| White text | 4.10:1 |
Values
| HEX | #4284AB |
| RGB | rgb(66, 132, 171) |
| HSL | hsl(202, 44%, 46%) |
| OKLCH | oklch(58.7% 0.09 237) |
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 #4284AB | 4.10:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #4284AB | 5.12:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #4284AB text on white | 4.10:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #4284AB text on black | 5.12:1 | AA | Lc -33.7 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A9C5D8
oklch(80.9% 0.041 237.7)
-
Step 400
400
#7AA7C4
oklch(70.7% 0.064 237.1)
-
Step 500
500
#5691B5
oklch(63.1% 0.082 236.9)
-
Step 600
600 (this color)
#4284AB
oklch(58.7% 0.09 237)
-
Step 700
700
#2A678A
oklch(49% 0.084 237.2)
-
Step 800
800
#245470
oklch(42.6% 0.07 237.2)
-
Step 900
900
#23465B
oklch(37.8% 0.054 236.9)
-
Step 950
950
#152935
oklch(27% 0.034 236.3)
#4284AB 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) | #7283AD | 0.053 |
| Deuteranopia (no green cones) | #6379AA | 0.044 |
| Tritanopia (no blue cones) | #008E91 | 0.065 |
| Achromatopsia (no color) | #7D7D7D | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4284AB
#4284AB
oklch(58.7% 0.09 237)
- #A56E44
#A56E44
oklch(58.7% 0.091 57.2)
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 #4284AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.017
- Off Blue #5684AE ΔE 0.020
- Cool Blue #4984B8 ΔE 0.022
- Dusty Blue #5A86AD ΔE 0.026
- Blue NCS #118AB2 ΔE 0.028
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.030
- Teal Blue #01889F ΔE 0.039
Use #4284AB 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.