#4159DF
Closest named color: Warm Blue (#4B57DB). oklch(52.8% 0.205 270), rgb(65, 89, 223).
Aa
White text reads best on this color (5.64:1).
About this color
#4159DF is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.205 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.013 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #4159DF |
| RGB | rgb(65, 89, 223) |
| HSL | hsl(231, 71%, 56%) |
| OKLCH | oklch(52.8% 0.205 270) |
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 #4159DF | 5.64:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #4159DF | 3.71:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #4159DF text on white | 5.64:1 | AA | Lc 77.7 | Fine for body text |
| #4159DF text on black | 3.71:1 | AA large text | Lc -24.1 | 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
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#A9BEFD
oklch(80.8% 0.092 270)
-
Step 400
400
#7D9AFC
oklch(70.7% 0.147 269.9)
-
Step 500
500
#5F7DFA
oklch(63.2% 0.189 270.1)
-
Step 600
600 (this color)
#4159DF
oklch(52.8% 0.205 270)
-
Step 700
700
#3A50CA
oklch(49.1% 0.19 270)
-
Step 800
800
#3042A4
oklch(42.7% 0.159 270.3)
-
Step 900
900
#293A82
oklch(37.8% 0.123 269.6)
-
Step 950
950
#18224C
oklch(26.9% 0.079 270.3)
#4159DF 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) | #006FE3 | 0.056 |
| Deuteranopia (no green cones) | #0060DC | 0.039 |
| Tritanopia (no blue cones) | #007B93 | 0.165 |
| Achromatopsia (no color) | #676767 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4159DF
#4159DF
oklch(52.8% 0.205 270)
- #836700
#836700
oklch(52.7% 0.108 89.9)
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 #4159DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.013
- Neon Blue #4361EE ΔE 0.030
- Azul #1D5DEC ΔE 0.034
- Royal Blue #4169E1 ΔE 0.038
- Cerulean Blue #056EEE ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.057
- Bright Blue #0165FC ΔE 0.058
- Iris #6258C4 ΔE 0.060
Use #4159DF 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.