#4155C3
Closest named color: Warm Blue (#4B57DB). oklch(49.8% 0.173 271), rgb(65, 85, 195).
Aa
White text reads best on this color (6.34:1).
About this color
#4155C3 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.173 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.040 away. White text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.31:1 |
| White text | 6.34:1 |
Values
| HEX | #4155C3 |
| RGB | rgb(65, 85, 195) |
| HSL | hsl(231, 52%, 51%) |
| OKLCH | oklch(49.8% 0.173 271) |
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 #4155C3 | 6.34:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #4155C3 | 3.31:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #4155C3 text on white | 6.34:1 | AA | Lc 81.1 | Fine for body text |
| #4155C3 text on black | 3.31:1 | AA large text | Lc -20.7 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ACBEF7
oklch(80.8% 0.083 270.9)
-
Step 400
400
#829BF4
oklch(70.8% 0.133 270.8)
-
Step 500
500
#657FEF
oklch(63.2% 0.17 271)
-
Step 600
600
#4E65DE
oklch(55.6% 0.185 271)
-
Step 700
700 (this color)
#4155C3
oklch(49.8% 0.173 271)
-
Step 800
800
#34459C
oklch(42.8% 0.142 270.8)
-
Step 900
900
#2D3B7C
oklch(37.8% 0.111 271)
-
Step 950
950
#1A2348
oklch(27% 0.07 270.8)
#4155C3 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) | #0066C7 | 0.052 |
| Deuteranopia (no green cones) | #005AC1 | 0.042 |
| Tritanopia (no blue cones) | #007084 | 0.142 |
| Achromatopsia (no color) | #5F5F5F | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4155C3
#4155C3
oklch(49.8% 0.173 271)
- #786000
#786000
oklch(49.9% 0.102 91.7)
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 #4155C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.040
- Iris #6258C4 ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.061
- Blurple #5539CC ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.063
Use #4155C3 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.