#4E59B5
Closest named color: Iris (#6258C4). oklch(50.4% 0.144 274.9), rgb(78, 89, 181).
Aa
White text reads best on this color (6.14:1).
About this color
#4E59B5 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.144 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.42:1 |
| White text | 6.14:1 |
Values
| HEX | #4E59B5 |
| RGB | rgb(78, 89, 181) |
| HSL | hsl(234, 41%, 51%) |
| OKLCH | oklch(50.4% 0.144 274.9) |
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 #4E59B5 | 6.14:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #4E59B5 | 3.42:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #4E59B5 text on white | 6.14:1 | AA | Lc 80.4 | Fine for body text |
| #4E59B5 text on black | 3.42:1 | AA large text | Lc -21.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B3BEEE
oklch(80.9% 0.069 274.7)
-
Step 400
400
#8C9BE6
oklch(70.8% 0.111 274.6)
-
Step 500
500
#7180DF
oklch(63.1% 0.143 274.8)
-
Step 600
600
#5B67CC
oklch(55.6% 0.155 275.1)
-
Step 700
700 (this color)
#4E59B5
oklch(50.4% 0.144 274.9)
-
Step 800
800
#3D468F
oklch(42.6% 0.12 274.9)
-
Step 900
900
#343C72
oklch(37.8% 0.092 274.8)
-
Step 950
950
#1E2343
oklch(26.9% 0.06 275)
#4E59B5 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) | #2966B8 | 0.046 |
| Deuteranopia (no green cones) | #175DB3 | 0.051 |
| Tritanopia (no blue cones) | #106E7E | 0.128 |
| Achromatopsia (no color) | #626262 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E59B5
#4E59B5
oklch(50.4% 0.144 274.9)
- #776300
#776300
oklch(50.4% 0.104 95.1)
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 #4E59B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- French Blue #436BAD ΔE 0.052
- Mid Blue #276AB3 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.058
- Dusky Blue #475F94 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.062
Use #4E59B5 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.