#4055BA
Closest named color: Iris (#6258C4). oklch(49% 0.16 270.5), rgb(64, 85, 186).
Aa
White text reads best on this color (6.50:1).
About this color
#4055BA is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.160 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.052 away. White text reads best on it, at 6.50:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #4055BA |
| RGB | rgb(64, 85, 186) |
| HSL | hsl(230, 49%, 49%) |
| OKLCH | oklch(49% 0.16 270.5) |
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 #4055BA | 6.50:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #4055BA | 3.22:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #4055BA text on white | 6.50:1 | AA | Lc 81.9 | Fine for body text |
| #4055BA text on black | 3.22:1 | AA large text | Lc -20.0 | 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
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF4
oklch(81% 0.078 270)
-
Step 400
400
#839CEE
oklch(70.8% 0.124 270.1)
-
Step 500
500
#6680E9
oklch(63% 0.16 270.8)
-
Step 600
600
#4F67D7
oklch(55.6% 0.173 270.7)
-
Step 700
700 (this color)
#4055BA
oklch(49% 0.16 270.5)
-
Step 800
800
#354697
oklch(42.7% 0.134 270.8)
-
Step 900
900
#2D3C78
oklch(37.7% 0.104 270.2)
-
Step 950
950
#1B2446
oklch(27.1% 0.064 270.5)
#4055BA 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) | #0963BE | 0.046 |
| Deuteranopia (no green cones) | #0058B8 | 0.042 |
| Tritanopia (no blue cones) | #006D7F | 0.133 |
| Achromatopsia (no color) | #5E5E5E | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4055BA
#4055BA
oklch(49% 0.16 270.5)
- #765D00
#765D00
oklch(49% 0.1 90.4)
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 #4055BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.052
- Warm Blue #4B57DB ΔE 0.054
- Mid Blue #276AB3 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.066
- French Blue #436BAD ΔE 0.066
- Blurple #5539CC ΔE 0.069
Use #4055BA 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.