#4059E1
Closest named color: Warm Blue (#4B57DB). oklch(52.9% 0.208 269.8), rgb(64, 89, 225).
Aa
White text reads best on this color (5.62:1).
About this color
#4059E1 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.208 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.016 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #4059E1 |
| RGB | rgb(64, 89, 225) |
| HSL | hsl(231, 73%, 57%) |
| OKLCH | oklch(52.9% 0.208 269.8) |
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 #4059E1 | 5.62:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #4059E1 | 3.73:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #4059E1 text on white | 5.62:1 | AA | Lc 77.5 | Fine for body text |
| #4059E1 text on black | 3.73:1 | AA large text | Lc -24.2 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFD
oklch(93.7% 0.027 269.7)
-
Step 200
200
#CBD8FC
oklch(88.4% 0.052 269.6)
-
Step 300
300
#A9BEFE
oklch(80.9% 0.094 270.2)
-
Step 400
400
#7C9AFD
oklch(70.7% 0.149 269.6)
-
Step 500
500
#5E7DFB
oklch(63.2% 0.19 269.8)
-
Step 600
600 (this color)
#4059E1
oklch(52.9% 0.208 269.8)
-
Step 700
700
#3950CC
oklch(49.2% 0.193 269.7)
-
Step 800
800
#2F42A5
oklch(42.7% 0.16 269.9)
-
Step 900
900
#293983
oklch(37.7% 0.126 270.1)
-
Step 950
950
#18224C
oklch(26.9% 0.079 270.3)
#4059E1 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) | #006FE5 | 0.056 |
| Deuteranopia (no green cones) | #0060DE | 0.038 |
| Tritanopia (no blue cones) | #007C94 | 0.167 |
| Achromatopsia (no color) | #676767 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4059E1
#4059E1
oklch(52.9% 0.208 269.8)
- #846800
#846800
oklch(53% 0.108 90.1)
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 #4059E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.016
- Neon Blue #4361EE ΔE 0.028
- Azul #1D5DEC ΔE 0.031
- Royal Blue #4169E1 ΔE 0.038
- Bright Blue #0165FC ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.059
- Electric Blue #0652FF ΔE 0.061
Use #4059E1 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.