#487AAA
Closest named color: Cerulean (#457B9D). oklch(56.5% 0.092 248.8), rgb(72, 122, 170).
Aa
Black text reads best on this color (4.63:1).
About this color
#487AAA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.092 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. Black text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.63:1 |
| White text | 4.52:1 |
Values
| HEX | #487AAA |
| RGB | rgb(72, 122, 170) |
| HSL | hsl(209, 40%, 47%) |
| OKLCH | oklch(56.5% 0.092 248.8) |
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 #487AAA | 4.52:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #487AAA | 4.63:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #487AAA text on white | 4.52:1 | AA | Lc 71.3 | Content text, not long reading |
| #487AAA text on black | 4.63:1 | AA | Lc -30.4 | 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
#ACC3DB
oklch(80.8% 0.042 249.5)
-
Step 400
400
#80A5C9
oklch(70.8% 0.067 248.1)
-
Step 500
500
#608EBB
oklch(63.2% 0.085 248.8)
-
Step 600
600 (this color)
#487AAA
oklch(56.5% 0.092 248.8)
-
Step 700
700
#37648F
oklch(49.1% 0.085 249)
-
Step 800
800
#2E5274
oklch(42.7% 0.07 248.5)
-
Step 900
900
#29445E
oklch(37.7% 0.056 248.6)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#487AAA 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) | #667CAC | 0.036 |
| Deuteranopia (no green cones) | #5972A9 | 0.027 |
| Tritanopia (no blue cones) | #00858B | 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°).
- #487AAA
#487AAA
oklch(56.5% 0.092 248.8)
- #996B34
#996B34
oklch(56.4% 0.092 68.8)
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 #487AAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Dull Blue #49759C ΔE 0.023
- Stormy Blue #507B9C ΔE 0.024
- Steel Blue #4682B4 ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.025
- Cool Blue #4984B8 ΔE 0.032
- Muted Blue #3B719F ΔE 0.033
- Off Blue #5684AE ΔE 0.034
Use #487AAA 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.