#477AA9
Closest named color: Cerulean (#457B9D). oklch(56.4% 0.092 247.9), rgb(71, 122, 169).
Aa
Black text reads best on this color (4.62:1).
About this color
#477AA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.092 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.020 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.62:1 |
| White text | 4.54:1 |
Values
| HEX | #477AA9 |
| RGB | rgb(71, 122, 169) |
| HSL | hsl(209, 41%, 47%) |
| OKLCH | oklch(56.4% 0.092 247.9) |
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 #477AA9 | 4.54:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #477AA9 | 4.62:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #477AA9 text on white | 4.54:1 | AA | Lc 71.4 | Content text, not long reading |
| #477AA9 text on black | 4.62:1 | AA | Lc -30.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ACC4DB
oklch(81% 0.042 247.2)
-
Step 400
400
#80A5C8
oklch(70.7% 0.066 247.3)
-
Step 500
500
#5F8EBA
oklch(63.1% 0.084 247.7)
-
Step 600
600 (this color)
#477AA9
oklch(56.4% 0.092 247.9)
-
Step 700
700
#36648F
oklch(49% 0.086 248.5)
-
Step 800
800
#2D5274
oklch(42.7% 0.071 247.9)
-
Step 900
900
#29445D
oklch(37.7% 0.054 247.6)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#477AA9 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) | #667BAB | 0.037 |
| Deuteranopia (no green cones) | #5972A8 | 0.028 |
| Tritanopia (no blue cones) | #00858A | 0.077 |
| Achromatopsia (no color) | #767676 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477AA9
#477AA9
oklch(56.4% 0.092 247.9)
- #996B35
#996B35
oklch(56.4% 0.092 68.4)
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 #477AA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.020
- Dull Blue #49759C ΔE 0.022
- Stormy Blue #507B9C ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.024
- Steel Blue #4682B4 ΔE 0.025
- Muted Blue #3B719F ΔE 0.032
- Cool Blue #4984B8 ΔE 0.033
- Off Blue #5684AE ΔE 0.035
Use #477AA9 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.