#4F89BE
Closest named color: Cool Blue (#4984B8). oklch(61.3% 0.101 247.8), rgb(79, 137, 190).
Aa
Black text reads best on this color (5.65:1).
About this color
#4F89BE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.101 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.017 away. Black text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.65:1 |
| White text | 3.71:1 |
Values
| HEX | #4F89BE |
| RGB | rgb(79, 137, 190) |
| HSL | hsl(209, 46%, 53%) |
| OKLCH | oklch(61.3% 0.101 247.8) |
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 #4F89BE | 3.71:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #4F89BE | 5.65:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #4F89BE text on white | 3.71:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #4F89BE text on black | 5.65:1 | AA | Lc -37.1 | 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 500.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A8C4E0
oklch(80.9% 0.05 248.4)
-
Step 400
400
#79A5D0
oklch(70.6% 0.079 248.4)
-
Step 500
500 (this color)
#4F89BE
oklch(61.3% 0.101 247.8)
-
Step 600
600
#3778B0
oklch(55.6% 0.11 247.3)
-
Step 700
700
#296498
oklch(49% 0.104 248.3)
-
Step 800
800
#24527B
oklch(42.7% 0.085 248.1)
-
Step 900
900
#224463
oklch(37.6% 0.067 248)
-
Step 950
950
#15283A
oklch(27% 0.042 248.4)
#4F89BE 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) | #728BC0 | 0.041 |
| Deuteranopia (no green cones) | #6480BD | 0.031 |
| Tritanopia (no blue cones) | #00959B | 0.083 |
| Achromatopsia (no color) | #858585 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F89BE
#4F89BE
oklch(61.3% 0.101 247.8)
- #AC783B
#AC783B
oklch(61.4% 0.101 68.2)
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 #4F89BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.017
- Off Blue #5684AE ΔE 0.025
- Steel Blue #4682B4 ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.026
- Faded Blue #658CBB ΔE 0.026
- Water Blue #0E87CC ΔE 0.043
- Blue NCS #118AB2 ΔE 0.044
- Windows Blue #3778BF ΔE 0.056
Use #4F89BE 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.