#447D9C
Closest named color: Cerulean (#457B9D). oklch(56.4% 0.077 234.2), rgb(68, 125, 156).
Aa
Black text reads best on this color (4.65:1).
About this color
#447D9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.077 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.007 away. Black text reads best on it, at 4.65:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.65:1 |
| White text | 4.50:1 |
Values
| HEX | #447D9C |
| RGB | rgb(68, 125, 156) |
| HSL | hsl(201, 39%, 44%) |
| OKLCH | oklch(56.4% 0.077 234.2) |
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 #447D9C | 4.50:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #447D9C | 4.65:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #447D9C text on white | 4.50:1 | AA | Lc 71.1 | Content text, not long reading |
| #447D9C text on black | 4.65:1 | AA | Lc -30.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ACC5D4
oklch(81% 0.034 234.2)
-
Step 400
400
#7FA7BE
oklch(70.7% 0.055 233.8)
-
Step 500
500
#5D91AE
oklch(63.1% 0.071 233.9)
-
Step 600
600 (this color)
#447D9C
oklch(56.4% 0.077 234.2)
-
Step 700
700
#336783
oklch(49% 0.071 234.4)
-
Step 800
800
#2B546B
oklch(42.6% 0.06 235.1)
-
Step 900
900
#284656
oklch(37.8% 0.045 233)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#447D9C 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) | #6E7C9E | 0.049 |
| Deuteranopia (no green cones) | #62739C | 0.042 |
| Tritanopia (no blue cones) | #008587 | 0.058 |
| Achromatopsia (no color) | #777777 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #447D9C
#447D9C
oklch(56.4% 0.077 234.2)
- #996949
#996949
oklch(56.4% 0.077 54.2)
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 #447D9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.007
- Stormy Blue #507B9C ΔE 0.013
- Dull Blue #49759C ΔE 0.024
- Metallic Blue #4F738E ΔE 0.031
- Steel Blue #4682B4 ΔE 0.038
- Off Blue #5684AE ΔE 0.039
- Muted Blue #3B719F ΔE 0.040
- Grey Blue #647D8E ΔE 0.040
Use #447D9C 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.