#4555A4
Closest named color: Denim Blue (#3B5B92). oklch(47.8% 0.128 272.1), rgb(69, 85, 164).
Aa
White text reads best on this color (6.79:1).
About this color
#4555A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.128 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.038 away. White text reads best on it, at 6.79:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.08:1 |
| White text | 6.79:1 |
Values
| HEX | #4555A4 |
| RGB | rgb(69, 85, 164) |
| HSL | hsl(230, 41%, 46%) |
| OKLCH | oklch(47.8% 0.128 272.1) |
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 #4555A4 | 6.79:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #4555A4 | 3.08:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #4555A4 text on white | 6.79:1 | AA | Lc 83.2 | Fine for body text |
| #4555A4 text on black | 3.08:1 | AA large text | Lc -18.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B2BFE9
oklch(80.9% 0.061 271.5)
-
Step 400
400
#8B9DDF
oklch(70.8% 0.099 272)
-
Step 500
500
#6F83D6
oklch(63.1% 0.127 272.1)
-
Step 600
600
#586BC3
oklch(55.6% 0.138 272.1)
-
Step 700
700 (this color)
#4555A4
oklch(47.8% 0.128 272.1)
-
Step 800
800
#3B4988
oklch(42.6% 0.105 271.8)
-
Step 900
900
#333E6D
oklch(37.8% 0.082 272)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#4555A4 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) | #2F5FA7 | 0.033 |
| Deuteranopia (no green cones) | #2157A2 | 0.037 |
| Tritanopia (no blue cones) | #056774 | 0.115 |
| Achromatopsia (no color) | #5B5B5B | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4555A4
#4555A4
oklch(47.8% 0.128 272.1)
- #715A00
#715A00
oklch(47.7% 0.098 91.4)
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 #4555A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.038
- Twilight #4E518B ΔE 0.041
- Dusky Blue #475F94 ΔE 0.042
- Dusk Blue #26538D ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.057
- Dusk #4E5481 ΔE 0.057
- French Blue #436BAD ΔE 0.060
Use #4555A4 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.