#4555A5
Closest named color: Denim Blue (#3B5B92). oklch(47.8% 0.129 272.2), rgb(69, 85, 165).
Aa
White text reads best on this color (6.78:1).
About this color
#4555A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.129 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.039 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #4555A5 |
| RGB | rgb(69, 85, 165) |
| HSL | hsl(230, 41%, 46%) |
| OKLCH | oklch(47.8% 0.129 272.2) |
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 #4555A5 | 6.78:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #4555A5 | 3.09:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #4555A5 text on white | 6.78:1 | AA | Lc 83.2 | Fine for body text |
| #4555A5 text on black | 3.09:1 | AA large text | Lc -18.8 | 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
#B2BFEA
oklch(80.9% 0.063 271.8)
-
Step 400
400
#8B9DDF
oklch(70.8% 0.099 272)
-
Step 500
500
#6F83D6
oklch(63.1% 0.127 272.1)
-
Step 600
600
#586BC4
oklch(55.6% 0.139 272.1)
-
Step 700
700 (this color)
#4555A5
oklch(47.8% 0.129 272.2)
-
Step 800
800
#3B4989
oklch(42.7% 0.107 271.9)
-
Step 900
900
#333D6E
oklch(37.7% 0.085 273)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#4555A5 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) | #2E5FA8 | 0.033 |
| Deuteranopia (no green cones) | #2057A3 | 0.037 |
| Tritanopia (no blue cones) | #026775 | 0.115 |
| Achromatopsia (no color) | #5B5B5B | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4555A5
#4555A5
oklch(47.8% 0.129 272.2)
- #715B00
#715B00
oklch(47.9% 0.098 92.4)
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 #4555A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.039
- Twilight #4E518B ΔE 0.043
- Dusky Blue #475F94 ΔE 0.043
- Dusk Blue #26538D ΔE 0.054
- Blueberry #464196 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.059
- Dusk #4E5481 ΔE 0.059
- French Blue #436BAD ΔE 0.060
Use #4555A5 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.