#4155BC
Closest named color: Iris (#6258C4). oklch(49.3% 0.163 270.9), rgb(65, 85, 188).
Aa
White text reads best on this color (6.46:1).
About this color
#4155BC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.163 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.050 away. White text reads best on it, at 6.46:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.25:1 |
| White text | 6.46:1 |
Values
| HEX | #4155BC |
| RGB | rgb(65, 85, 188) |
| HSL | hsl(230, 49%, 50%) |
| OKLCH | oklch(49.3% 0.163 270.9) |
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 #4155BC | 6.46:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #4155BC | 3.25:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #4155BC text on white | 6.46:1 | AA | Lc 81.7 | Fine for body text |
| #4155BC text on black | 3.25:1 | AA large text | Lc -20.2 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBEF4
oklch(80.8% 0.079 271)
-
Step 400
400
#849BEF
oklch(70.7% 0.126 271.3)
-
Step 500
500
#6680EA
oklch(63.1% 0.161 270.8)
-
Step 600
600
#4F67D8
oklch(55.6% 0.175 270.7)
-
Step 700
700 (this color)
#4155BC
oklch(49.3% 0.163 270.9)
-
Step 800
800
#354698
oklch(42.8% 0.135 270.8)
-
Step 900
900
#2E3C79
oklch(37.9% 0.105 270.9)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#4155BC 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) | #0264C0 | 0.049 |
| Deuteranopia (no green cones) | #0059BA | 0.043 |
| Tritanopia (no blue cones) | #006E80 | 0.136 |
| Achromatopsia (no color) | #5E5E5E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4155BC
#4155BC
oklch(49.3% 0.163 270.9)
- #775E00
#775E00
oklch(49.3% 0.101 90.6)
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 #4155BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Blue Blue #2242C7 ΔE 0.062
- Bluey Purple #6241C7 ΔE 0.064
- Blurple #5539CC ΔE 0.067
- Slate Blue #6A5ACD ΔE 0.067
Use #4155BC 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.