#338AB2
Closest named color: Blue NCS (#118AB2). oklch(59.9% 0.102 232.1), rgb(51, 138, 178).
Aa
Black text reads best on this color (5.41:1).
About this color
#338AB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.102 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.015 away. Black text reads best on it, at 5.41:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #338AB2 |
| RGB | rgb(51, 138, 178) |
| HSL | hsl(199, 55%, 45%) |
| OKLCH | oklch(59.9% 0.102 232.1) |
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 #338AB2 | 3.87:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #338AB2 | 5.41:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #338AB2 text on white | 3.87:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #338AB2 text on black | 5.41:1 | AA | Lc -35.8 | 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 500.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A1C7DC
oklch(80.9% 0.05 232.4)
-
Step 400
400
#6CAACA
oklch(70.8% 0.079 231.9)
-
Step 500
500 (this color)
#338AB2
oklch(59.9% 0.102 232.1)
-
Step 600
600
#0E7DA8
oklch(55.5% 0.11 232.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#065675
oklch(42.6% 0.085 232.2)
-
Step 900
900
#14475F
oklch(37.6% 0.067 233.2)
-
Step 950
950
#0E2A37
oklch(27% 0.041 231.2)
#338AB2 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) | #7688B4 | 0.067 |
| Deuteranopia (no green cones) | #657CB1 | 0.057 |
| Tritanopia (no blue cones) | #009597 | 0.063 |
| Achromatopsia (no color) | #818181 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338AB2
#338AB2
oklch(59.9% 0.102 232.1)
- #AF6E44
#AF6E44
oklch(59.9% 0.101 52.6)
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 #338AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.015
- Steel Blue #4682B4 ΔE 0.026
- Cool Blue #4984B8 ΔE 0.027
- Off Blue #5684AE ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.033
- Teal Blue #01889F ΔE 0.037
- Water Blue #0E87CC ΔE 0.045
- Cerulean #457B9D ΔE 0.047
Use #338AB2 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.