#4451B3
Closest named color: Iris (#6258C4). oklch(48% 0.155 273.4), rgb(68, 81, 179).
Aa
White text reads best on this color (6.83:1).
About this color
#4451B3 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.155 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.056 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #4451B3 |
| RGB | rgb(68, 81, 179) |
| HSL | hsl(233, 45%, 48%) |
| OKLCH | oklch(48% 0.155 273.4) |
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 #4451B3 | 6.83:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #4451B3 | 3.07:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #4451B3 text on white | 6.83:1 | AA | Lc 83.3 | Fine for body text |
| #4451B3 text on black | 3.07:1 | AA large text | Lc -18.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF2
oklch(81% 0.075 273.7)
-
Step 400
400
#899BEB
oklch(70.8% 0.119 273.4)
-
Step 500
500
#6D7FE5
oklch(63% 0.154 273.7)
-
Step 600
600
#5666D3
oklch(55.5% 0.167 273.4)
-
Step 700
700 (this color)
#4451B3
oklch(48% 0.155 273.4)
-
Step 800
800
#3A4694
oklch(42.8% 0.128 273.2)
-
Step 900
900
#313B76
oklch(37.6% 0.101 273.4)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#4451B3 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) | #0A60B6 | 0.052 |
| Deuteranopia (no green cones) | #0056B1 | 0.049 |
| Tritanopia (no blue cones) | #00687A | 0.132 |
| Achromatopsia (no color) | #5B5B5B | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4451B3
#4451B3
oklch(48% 0.155 273.4)
- #705B00
#705B00
oklch(47.8% 0.098 93.2)
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 #4451B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Blueberry #464196 ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.063
- Blue Blue #2242C7 ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.064
- Warm Blue #4B57DB ΔE 0.065
- Twilight #4E518B ΔE 0.066
Use #4451B3 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.