#477FBF
Closest named color: Cool Blue (#4984B8). oklch(58.7% 0.115 253.1), rgb(71, 127, 191).
Aa
Black text reads best on this color (5.05:1).
About this color
#477FBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.115 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.020 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #477FBF |
| RGB | rgb(71, 127, 191) |
| HSL | hsl(212, 48%, 51%) |
| OKLCH | oklch(58.7% 0.115 253.1) |
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 #477FBF | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #477FBF | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #477FBF text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #477FBF text on black | 5.05:1 | AA | Lc -33.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#AAC3E2
oklch(80.9% 0.052 253.9)
-
Step 400
400
#7CA4D4
oklch(70.8% 0.083 253.4)
-
Step 500
500
#598CC8
oklch(63% 0.106 253.4)
-
Step 600
600 (this color)
#477FBF
oklch(58.7% 0.115 253.1)
-
Step 700
700
#30629C
oklch(49% 0.108 253.7)
-
Step 800
800
#28517E
oklch(42.8% 0.088 252.5)
-
Step 900
900
#254365
oklch(37.6% 0.069 252.8)
-
Step 950
950
#16273B
oklch(26.8% 0.044 253.3)
#477FBF 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) | #6483C2 | 0.035 |
| Deuteranopia (no green cones) | #5377BE | 0.023 |
| Tritanopia (no blue cones) | #008E96 | 0.094 |
| Achromatopsia (no color) | #7C7C7C | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477FBF
#477FBF
oklch(58.7% 0.115 253.1)
- #A5701C
#A5701C
oklch(58.7% 0.115 73.1)
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 #477FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.020
- Steel Blue #4682B4 ΔE 0.021
- Windows Blue #3778BF ΔE 0.026
- Water Blue #0E87CC ΔE 0.036
- Off Blue #5684AE ΔE 0.036
- Dusty Blue #5A86AD ΔE 0.043
- Nice Blue #107AB0 ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.048
Use #477FBF 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.