#4389C8
Closest named color: Cool Blue (#4984B8). oklch(61.3% 0.119 248.2), rgb(67, 137, 200).
Aa
Black text reads best on this color (5.65:1).
About this color
#4389C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.119 and its hue 248°. 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 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.65:1 |
| White text | 3.71:1 |
Values
| HEX | #4389C8 |
| RGB | rgb(67, 137, 200) |
| HSL | hsl(208, 55%, 52%) |
| OKLCH | oklch(61.3% 0.119 248.2) |
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 #4389C8 | 3.71:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #4389C8 | 5.65:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #4389C8 text on white | 3.71:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #4389C8 text on black | 5.65:1 | AA | Lc -37.2 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A4C5E5
oklch(81% 0.058 247.7)
-
Step 400
400
#71A6D8
oklch(70.8% 0.093 247.8)
-
Step 500
500 (this color)
#4389C8
oklch(61.3% 0.119 248.2)
-
Step 600
600
#2777BB
oklch(55.5% 0.13 248.6)
-
Step 700
700
#1864A1
oklch(49.1% 0.12 248.2)
-
Step 800
800
#185283
oklch(42.8% 0.1 248.5)
-
Step 900
900
#1B4469
oklch(37.7% 0.078 248.6)
-
Step 950
950
#11283D
oklch(26.9% 0.049 248.1)
#4389C8 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) | #6D8CCB | 0.045 |
| Deuteranopia (no green cones) | #5B7FC7 | 0.033 |
| Tritanopia (no blue cones) | #00989F | 0.092 |
| Achromatopsia (no color) | #848484 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4389C8
#4389C8
oklch(61.3% 0.119 248.2)
- #B27526
#B27526
oklch(61.3% 0.119 68.4)
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 #4389C8, 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 0.029
- Steel Blue #4682B4 ΔE 0.033
- Off Blue #5684AE ΔE 0.041
- Faded Blue #658CBB ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.043
- Blue NCS #118AB2 ΔE 0.046
Use #4389C8 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.