#487FA1
Closest named color: Cerulean (#457B9D). oklch(57.3% 0.079 237.4), rgb(72, 127, 161).
Aa
Black text reads best on this color (4.82:1).
About this color
#487FA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.079 and its hue 237°. 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 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #487FA1 |
| RGB | rgb(72, 127, 161) |
| HSL | hsl(203, 38%, 46%) |
| OKLCH | oklch(57.3% 0.079 237.4) |
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 #487FA1 | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #487FA1 | 4.82:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #487FA1 text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #487FA1 text on black | 4.82:1 | AA | Lc -31.7 | 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
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#80A6C0
oklch(70.6% 0.056 238.5)
-
Step 500
500
#5E90B0
oklch(63% 0.072 237.6)
-
Step 600
600 (this color)
#487FA1
oklch(57.3% 0.079 237.4)
-
Step 700
700
#346785
oklch(49.2% 0.073 236.7)
-
Step 800
800
#2C546C
oklch(42.7% 0.06 236.8)
-
Step 900
900
#284558
oklch(37.6% 0.048 238.6)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#487FA1 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) | #6F7EA3 | 0.046 |
| Deuteranopia (no green cones) | #6375A0 | 0.039 |
| Tritanopia (no blue cones) | #04888A | 0.063 |
| Achromatopsia (no color) | #797979 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487FA1
#487FA1
oklch(57.3% 0.079 237.4)
- #9B6C49
#9B6C49
oklch(57.2% 0.078 57.1)
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 #487FA1, 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 0.013
- Dull Blue #49759C ΔE 0.028
- Off Blue #5684AE ΔE 0.029
- Steel Blue #4682B4 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.033
- Cool Blue #4984B8 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.039
Use #487FA1 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.