#4158CB
Closest named color: Warm Blue (#4B57DB). oklch(51% 0.18 270.2), rgb(65, 88, 203).
Aa
White text reads best on this color (6.02:1).
About this color
#4158CB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.180 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.028 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #4158CB |
| RGB | rgb(65, 88, 203) |
| HSL | hsl(230, 57%, 53%) |
| OKLCH | oklch(51% 0.18 270.2) |
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 #4158CB | 6.02:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #4158CB | 3.48:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #4158CB text on white | 6.02:1 | AA | Lc 79.7 | Fine for body text |
| #4158CB text on black | 3.48:1 | AA large text | Lc -22.1 | 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 700.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEFA
oklch(80.9% 0.088 270.8)
-
Step 400
400
#7F9BF7
oklch(70.8% 0.139 269.8)
-
Step 500
500
#617EF3
oklch(63% 0.177 270.2)
-
Step 600
600
#4A64E2
oklch(55.5% 0.193 270.1)
-
Step 700
700 (this color)
#4158CB
oklch(51% 0.18 270.2)
-
Step 800
800
#32449F
oklch(42.7% 0.149 270.4)
-
Step 900
900
#2B3A7E
oklch(37.6% 0.116 270.5)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#4158CB 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) | #0069CF | 0.051 |
| Deuteranopia (no green cones) | #005DC9 | 0.041 |
| Tritanopia (no blue cones) | #007489 | 0.146 |
| Achromatopsia (no color) | #636363 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4158CB
#4158CB
oklch(51% 0.18 270.2)
- #7D6300
#7D6300
oklch(51.1% 0.104 90.7)
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 #4158CB, closest first.
No curated palette has a color within ΔE 0.04 of #4158CB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.028
- Iris #6258C4 ΔE 0.046
- Royal Blue #4169E1 ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.056
- Azul #1D5DEC ΔE 0.057
- Neon Blue #4361EE ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.062
Use #4158CB 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.