#4551BC
Closest named color: Iris (#6258C4). oklch(48.7% 0.167 273.6), rgb(69, 81, 188).
Aa
White text reads best on this color (6.65:1).
About this color
#4551BC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.167 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.049 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #4551BC |
| RGB | rgb(69, 81, 188) |
| HSL | hsl(234, 47%, 50%) |
| OKLCH | oklch(48.7% 0.167 273.6) |
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 #4551BC | 6.65:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #4551BC | 3.15:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #4551BC text on white | 6.65:1 | AA | Lc 82.5 | Fine for body text |
| #4551BC text on black | 3.15:1 | AA large text | Lc -19.4 | 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
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#B0BEF5
oklch(81% 0.079 273.4)
-
Step 400
400
#879AF1
oklch(70.8% 0.129 273.3)
-
Step 500
500
#6B7EEC
oklch(63.1% 0.165 273.4)
-
Step 600
600
#5564DA
oklch(55.6% 0.179 273.6)
-
Step 700
700 (this color)
#4551BC
oklch(48.7% 0.167 273.6)
-
Step 800
800
#394499
oklch(42.7% 0.138 273.5)
-
Step 900
900
#313A7A
oklch(37.7% 0.108 274)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#4551BC 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) | #0062C0 | 0.056 |
| Deuteranopia (no green cones) | #0057BA | 0.049 |
| Tritanopia (no blue cones) | #006B7E | 0.142 |
| Achromatopsia (no color) | #5C5C5C | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4551BC
#4551BC
oklch(48.7% 0.167 273.6)
- #735E00
#735E00
oklch(48.8% 0.1 93.7)
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 #4551BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.051
- Bluey Purple #6241C7 ΔE 0.055
- Blurple #5539CC ΔE 0.058
- Blue Blue #2242C7 ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.066
Use #4551BC 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.