#4388A3
Closest named color: Dusty Blue (#5A86AD). oklch(59.3% 0.081 226.2), rgb(67, 136, 163).
Aa
Black text reads best on this color (5.28:1).
About this color
#4388A3 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.081 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.030 away. Black text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #4388A3 |
| RGB | rgb(67, 136, 163) |
| HSL | hsl(197, 42%, 45%) |
| OKLCH | oklch(59.3% 0.081 226.2) |
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 #4388A3 | 3.97:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #4388A3 | 5.28:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #4388A3 text on white | 3.97:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #4388A3 text on black | 5.28:1 | AA | Lc -34.8 | 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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D3
oklch(80.9% 0.036 226.7)
-
Step 400
400
#7AA9BD
oklch(70.8% 0.058 226.2)
-
Step 500
500
#5593AC
oklch(63.1% 0.074 226.1)
-
Step 600
600 (this color)
#4388A3
oklch(59.3% 0.081 226.2)
-
Step 700
700
#296981
oklch(49% 0.075 226.2)
-
Step 800
800
#245669
oklch(42.8% 0.062 226)
-
Step 900
900
#234755
oklch(37.7% 0.048 225.6)
-
Step 950
950
#152A32
oklch(27.1% 0.031 224.6)
#4388A3 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) | #7985A4 | 0.061 |
| Deuteranopia (no green cones) | #6C7BA3 | 0.055 |
| Tritanopia (no blue cones) | #009091 | 0.052 |
| Achromatopsia (no color) | #808080 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4388A3
#4388A3
oklch(59.3% 0.081 226.2)
- #A66F54
#A66F54
oklch(59.3% 0.081 46.9)
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 #4388A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.030
- Off Blue #5684AE ΔE 0.030
- Blue NCS #118AB2 ΔE 0.032
- Teal Blue #01889F ΔE 0.032
- Steel Blue #4682B4 ΔE 0.036
- Stormy Blue #507B9C ΔE 0.037
- Cerulean #457B9D ΔE 0.037
- Cool Blue #4984B8 ΔE 0.039
Use #4388A3 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.