#4F89B7
Closest named color: Cool Blue (#4984B8). oklch(61% 0.093 244.1), rgb(79, 137, 183).
Aa
Black text reads best on this color (5.59:1).
About this color
#4F89B7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.093 and its hue 244°. 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 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #4F89B7 |
| RGB | rgb(79, 137, 183) |
| HSL | hsl(207, 42%, 51%) |
| OKLCH | oklch(61% 0.093 244.1) |
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 #4F89B7 | 3.75:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #4F89B7 | 5.59:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #4F89B7 text on white | 3.75:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #4F89B7 text on black | 5.59:1 | AA | Lc -36.7 | 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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#A8C5DC
oklch(80.9% 0.045 242.1)
-
Step 400
400
#79A6CB
oklch(70.7% 0.073 243.9)
-
Step 500
500 (this color)
#4F89B7
oklch(61% 0.093 244.1)
-
Step 600
600
#3879AA
oklch(55.6% 0.101 243.9)
-
Step 700
700
#2A6692
oklch(49.2% 0.094 243.7)
-
Step 800
800
#245376
oklch(42.7% 0.078 243.6)
-
Step 900
900
#23455F
oklch(37.7% 0.06 243.4)
-
Step 950
950
#152838
oklch(26.9% 0.039 245.4)
#4F89B7 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) | #758AB9 | 0.044 |
| Deuteranopia (no green cones) | #677FB6 | 0.036 |
| Tritanopia (no blue cones) | #009499 | 0.076 |
| Achromatopsia (no color) | #848484 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F89B7
#4F89B7
oklch(61% 0.093 244.1)
- #AA7744
#AA7744
oklch(61% 0.093 64.5)
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 #4F89B7, 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 0.017
- Dusty Blue #5A86AD ΔE 0.017
- Steel Blue #4682B4 ΔE 0.023
- Faded Blue #658CBB ΔE 0.027
- Blue NCS #118AB2 ΔE 0.039
- Water Blue #0E87CC ΔE 0.049
- Stormy Blue #507B9C ΔE 0.050
Use #4F89B7 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.