#4789C8
Closest named color: Cool Blue (#4984B8). oklch(61.5% 0.117 249.3), rgb(71, 137, 200).
Aa
Black text reads best on this color (5.68:1).
About this color
#4789C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.117 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.025 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #4789C8 |
| RGB | rgb(71, 137, 200) |
| HSL | hsl(209, 54%, 53%) |
| OKLCH | oklch(61.5% 0.117 249.3) |
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 #4789C8 | 3.69:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #4789C8 | 5.68:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #4789C8 text on white | 3.69:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #4789C8 text on black | 5.68:1 | AA | Lc -37.4 | 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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E5
oklch(80.9% 0.058 250.2)
-
Step 400
400
#73A5D8
oklch(70.7% 0.092 249.7)
-
Step 500
500 (this color)
#4789C8
oklch(61.5% 0.117 249.3)
-
Step 600
600
#2C77BA
oklch(55.6% 0.127 249.2)
-
Step 700
700
#1E64A1
oklch(49.2% 0.119 249.3)
-
Step 800
800
#1B5282
oklch(42.8% 0.098 248.8)
-
Step 900
900
#1D4468
oklch(37.7% 0.076 248.9)
-
Step 950
950
#12283D
oklch(27% 0.048 249)
#4789C8 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) | #6E8CCB | 0.043 |
| Deuteranopia (no green cones) | #5C7FC7 | 0.032 |
| Tritanopia (no blue cones) | #00989F | 0.093 |
| Achromatopsia (no color) | #858585 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4789C8
#4789C8
oklch(61.5% 0.117 249.3)
- #B27627
#B27627
oklch(61.5% 0.118 69)
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 #4789C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.025
- Water Blue #0E87CC ΔE 0.032
- Steel Blue #4682B4 ΔE 0.033
- Faded Blue #658CBB ΔE 0.038
- Off Blue #5684AE ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.042
- Blue NCS #118AB2 ΔE 0.048
Use #4789C8 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.