#477CA6
Closest named color: Cerulean (#457B9D). oklch(56.7% 0.087 244.1), rgb(71, 124, 166).
Aa
Black text reads best on this color (4.70:1).
About this color
#477CA6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.087 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.014 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #477CA6 |
| RGB | rgb(71, 124, 166) |
| HSL | hsl(207, 40%, 46%) |
| OKLCH | oklch(56.7% 0.087 244.1) |
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 #477CA6 | 4.46:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #477CA6 | 4.70:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #477CA6 text on white | 4.46:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #477CA6 text on black | 4.70:1 | AA | Lc -30.8 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ACC4D8
oklch(80.9% 0.039 243.3)
-
Step 400
400
#80A5C5
oklch(70.6% 0.062 244.9)
-
Step 500
500
#5E8FB6
oklch(63.1% 0.079 243.5)
-
Step 600
600 (this color)
#477CA6
oklch(56.7% 0.087 244.1)
-
Step 700
700
#35658B
oklch(49% 0.081 244.4)
-
Step 800
800
#2D5371
oklch(42.8% 0.066 244.1)
-
Step 900
900
#28455B
oklch(37.8% 0.052 242.6)
-
Step 950
950
#182835
oklch(26.9% 0.033 243.9)
#477CA6 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) | #6A7DA8 | 0.041 |
| Deuteranopia (no green cones) | #5D73A5 | 0.033 |
| Tritanopia (no blue cones) | #00868A | 0.071 |
| Achromatopsia (no color) | #777777 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477CA6
#477CA6
oklch(56.7% 0.087 244.1)
- #9A6B3D
#9A6B3D
oklch(56.7% 0.086 63.9)
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 #477CA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.014
- Stormy Blue #507B9C ΔE 0.017
- Dull Blue #49759C ΔE 0.022
- Steel Blue #4682B4 ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.031
- Off Blue #5684AE ΔE 0.031
- Cool Blue #4984B8 ΔE 0.032
- Muted Blue #3B719F ΔE 0.036
Use #477CA6 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.