#477E99
Closest named color: Cerulean (#457B9D). oklch(56.6% 0.072 231.2), rgb(71, 126, 153).
Aa
Black text reads best on this color (4.71:1).
About this color
#477E99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.072 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.013 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #477E99 |
| RGB | rgb(71, 126, 153) |
| HSL | hsl(200, 37%, 44%) |
| OKLCH | oklch(56.6% 0.072 231.2) |
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 #477E99 | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #477E99 | 4.71:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #477E99 text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #477E99 text on black | 4.71:1 | AA | Lc -30.9 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ADC5D2
oklch(81% 0.032 231.4)
-
Step 400
400
#80A7BB
oklch(70.7% 0.051 230.7)
-
Step 500
500
#5F91AA
oklch(63.1% 0.066 230.9)
-
Step 600
600 (this color)
#477E99
oklch(56.6% 0.072 231.2)
-
Step 700
700
#356880
oklch(49.2% 0.067 230.6)
-
Step 800
800
#2D5468
oklch(42.6% 0.055 232.4)
-
Step 900
900
#294654
oklch(37.7% 0.042 230.2)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#477E99 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) | #717C9A | 0.050 |
| Deuteranopia (no green cones) | #657499 | 0.043 |
| Tritanopia (no blue cones) | #128587 | 0.052 |
| Achromatopsia (no color) | #777777 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477E99
#477E99
oklch(56.6% 0.072 231.2)
- #986A4F
#986A4F
oklch(56.5% 0.071 51.2)
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 #477E99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.013
- Stormy Blue #507B9C ΔE 0.014
- Dull Blue #49759C ΔE 0.028
- Metallic Blue #4F738E ΔE 0.032
- Grey Blue #647D8E ΔE 0.035
- Off Blue #5684AE ΔE 0.039
- Teal Blue #01889F ΔE 0.040
- Steel Blue #4682B4 ΔE 0.041
Use #477E99 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.