#4451BF
Closest named color: Warm Blue (#4B57DB). oklch(48.9% 0.171 273.2), rgb(68, 81, 191).
Aa
White text reads best on this color (6.61:1).
About this color
#4451BF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.171 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.047 away. White text reads best on it, at 6.61:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #4451BF |
| RGB | rgb(68, 81, 191) |
| HSL | hsl(234, 49%, 51%) |
| OKLCH | oklch(48.9% 0.171 273.2) |
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 #4451BF | 6.61:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #4451BF | 3.17:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #4451BF text on white | 6.61:1 | AA | Lc 82.3 | Fine for body text |
| #4451BF text on black | 3.17:1 | AA large text | Lc -19.6 | 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
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBEF7
oklch(81% 0.082 273)
-
Step 400
400
#869AF3
oklch(70.8% 0.132 273)
-
Step 500
500
#6A7DEE
oklch(63% 0.169 273.4)
-
Step 600
600
#5464DD
oklch(55.7% 0.184 273.2)
-
Step 700
700 (this color)
#4451BF
oklch(48.9% 0.171 273.2)
-
Step 800
800
#38449B
oklch(42.8% 0.141 273)
-
Step 900
900
#303A7B
oklch(37.7% 0.11 273.4)
-
Step 950
950
#1C2348
oklch(27.1% 0.069 272.9)
#4451BF 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) | #0062C3 | 0.055 |
| Deuteranopia (no green cones) | #0057BD | 0.048 |
| Tritanopia (no blue cones) | #006C80 | 0.143 |
| Achromatopsia (no color) | #5D5D5D | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4451BF
#4451BF
oklch(48.9% 0.171 273.2)
- #745E00
#745E00
oklch(49% 0.1 92.9)
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 #4451BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.047
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Iris #6258C4 ΔE 0.049
- Bluey Purple #6241C7 ΔE 0.055
- Blurple #5539CC ΔE 0.056
- Blue Blue #2242C7 ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.066
Use #4451BF 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.