#487E9C
Closest named color: Cerulean (#457B9D). oklch(56.8% 0.074 234.5), rgb(72, 126, 156).
Aa
Black text reads best on this color (4.73:1).
About this color
#487E9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.074 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.010 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #487E9C |
| RGB | rgb(72, 126, 156) |
| HSL | hsl(201, 37%, 45%) |
| OKLCH | oklch(56.8% 0.074 234.5) |
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 #487E9C | 4.43:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #487E9C | 4.73:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #487E9C text on white | 4.43:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #487E9C text on black | 4.73:1 | AA | Lc -31.1 | 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
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC5D3
oklch(81% 0.033 233.4)
-
Step 400
400
#80A7BD
oklch(70.8% 0.053 233.2)
-
Step 500
500
#5F91AD
oklch(63.2% 0.068 233.9)
-
Step 600
600 (this color)
#487E9C
oklch(56.8% 0.074 234.5)
-
Step 700
700
#366782
oklch(49.1% 0.069 234.6)
-
Step 800
800
#2D546A
oklch(42.7% 0.057 235)
-
Step 900
900
#294656
oklch(37.8% 0.044 233.8)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#487E9C 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) | #707D9D | 0.048 |
| Deuteranopia (no green cones) | #64749C | 0.041 |
| Tritanopia (no blue cones) | #128688 | 0.057 |
| Achromatopsia (no color) | #787878 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487E9C
#487E9C
oklch(56.8% 0.074 234.5)
- #996B4C
#996B4C
oklch(56.8% 0.074 54.6)
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 #487E9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.010
- Stormy Blue #507B9C ΔE 0.011
- Dull Blue #49759C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.033
- Off Blue #5684AE ΔE 0.035
- Grey Blue #647D8E ΔE 0.036
- Steel Blue #4682B4 ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.039
Use #487E9C 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.