#4388AA
Closest named color: Off Blue (#5684AE). oklch(59.6% 0.087 232.2), rgb(67, 136, 170).
Aa
Black text reads best on this color (5.34:1).
About this color
#4388AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.087 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.023 away. Black text reads best on it, at 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.34:1 |
| White text | 3.93:1 |
Values
| HEX | #4388AA |
| RGB | rgb(67, 136, 170) |
| HSL | hsl(200, 43%, 46%) |
| OKLCH | oklch(59.6% 0.087 232.2) |
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 #4388AA | 3.93:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #4388AA | 5.34:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #4388AA text on white | 3.93:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #4388AA text on black | 5.34:1 | AA | Lc -35.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#75A9C4
oklch(70.8% 0.068 231.6)
-
Step 500
500 (this color)
#4388AA
oklch(59.6% 0.087 232.2)
-
Step 600
600
#2D7CA1
oklch(55.5% 0.095 232.6)
-
Step 700
700
#1F698A
oklch(49.2% 0.088 232.2)
-
Step 800
800
#1C5670
oklch(42.8% 0.073 231.5)
-
Step 900
900
#1E475A
oklch(37.7% 0.056 230.9)
-
Step 950
950
#132935
oklch(26.9% 0.036 234.1)
#4388AA 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) | #7786AC | 0.058 |
| Deuteranopia (no green cones) | #697CAA | 0.050 |
| Tritanopia (no blue cones) | #009193 | 0.059 |
| Achromatopsia (no color) | #808080 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4388AA
#4388AA
oklch(59.6% 0.087 232.2)
- #A8704D
#A8704D
oklch(59.6% 0.087 52.4)
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 #4388AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.024
- Steel Blue #4682B4 ΔE 0.027
- Blue NCS #118AB2 ΔE 0.027
- Cool Blue #4984B8 ΔE 0.028
- Teal Blue #01889F ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.038
Use #4388AA 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.