#4E55AD
Closest named color: Iris (#6258C4). oklch(49% 0.138 276.6), rgb(78, 85, 173).
Aa
White text reads best on this color (6.50:1).
About this color
#4E55AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.138 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.048 away. White text reads best on it, at 6.50:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #4E55AD |
| RGB | rgb(78, 85, 173) |
| HSL | hsl(236, 38%, 49%) |
| OKLCH | oklch(49% 0.138 276.6) |
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 #4E55AD | 6.50:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #4E55AD | 3.22:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #4E55AD text on white | 6.50:1 | AA | Lc 82.0 | Fine for body text |
| #4E55AD text on black | 3.22:1 | AA large text | Lc -19.9 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B5BDEC
oklch(80.8% 0.067 277.2)
-
Step 400
400
#8F9AE3
oklch(70.6% 0.107 276.7)
-
Step 500
500
#7580DB
oklch(63.2% 0.137 276.5)
-
Step 600
600
#5F67C8
oklch(55.6% 0.148 276.9)
-
Step 700
700 (this color)
#4E55AD
oklch(49% 0.138 276.6)
-
Step 800
800
#40468C
oklch(42.6% 0.114 276.7)
-
Step 900
900
#363C70
oklch(37.8% 0.088 276.3)
-
Step 950
950
#1F2342
oklch(26.9% 0.058 276.3)
#4E55AD 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) | #2862B0 | 0.048 |
| Deuteranopia (no green cones) | #1B5AAB | 0.051 |
| Tritanopia (no blue cones) | #1F6979 | 0.122 |
| Achromatopsia (no color) | #5E5E5E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E55AD
#4E55AD
oklch(49% 0.138 276.6)
- #716000
#716000
oklch(49.1% 0.101 97)
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 #4E55AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.055
- French Blue #436BAD ΔE 0.059
- Mid Blue #276AB3 ΔE 0.063
- Blueberry #464196 ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.067
Use #4E55AD 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.