#4387AE
Closest named color: Off Blue (#5684AE). oklch(59.6% 0.091 236.2), rgb(67, 135, 174).
Aa
Black text reads best on this color (5.31:1).
About this color
#4387AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.091 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.019 away. Black text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.31:1 |
| White text | 3.95:1 |
Values
| HEX | #4387AE |
| RGB | rgb(67, 135, 174) |
| HSL | hsl(202, 44%, 47%) |
| OKLCH | oklch(59.6% 0.091 236.2) |
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 #4387AE | 3.95:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #4387AE | 5.31:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #4387AE text on white | 3.95:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #4387AE text on black | 5.31:1 | AA | Lc -35.0 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A6C6DA
oklch(81% 0.045 235.5)
-
Step 400
400
#75A8C7
oklch(70.7% 0.071 235.8)
-
Step 500
500 (this color)
#4387AE
oklch(59.6% 0.091 236.2)
-
Step 600
600
#2E7BA5
oklch(55.5% 0.099 236.5)
-
Step 700
700
#1F688E
oklch(49.1% 0.092 236.3)
-
Step 800
800
#1D5573
oklch(42.7% 0.076 236.1)
-
Step 900
900
#1E465D
oklch(37.6% 0.06 236.6)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#4387AE 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) | #7586B0 | 0.055 |
| Deuteranopia (no green cones) | #667BAD | 0.047 |
| Tritanopia (no blue cones) | #009194 | 0.065 |
| Achromatopsia (no color) | #808080 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4387AE
#4387AE
oklch(59.6% 0.091 236.2)
- #A87047
#A87047
oklch(59.5% 0.091 56.2)
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 #4387AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.019
- Steel Blue #4682B4 ΔE 0.019
- Cool Blue #4984B8 ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.022
- Blue NCS #118AB2 ΔE 0.026
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.038
- Teal Blue #01889F ΔE 0.041
Use #4387AE 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.