#338FB0
Closest named color: Blue NCS (#118AB2). oklch(61% 0.098 225.9), rgb(51, 143, 176).
Aa
Black text reads best on this color (5.69:1).
About this color
#338FB0 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.098 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.023 away. Black text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #338FB0 |
| RGB | rgb(51, 143, 176) |
| HSL | hsl(196, 55%, 45%) |
| OKLCH | oklch(61% 0.098 225.9) |
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 #338FB0 | 3.68:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #338FB0 | 5.69:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #338FB0 text on white | 3.68:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #338FB0 text on black | 5.69:1 | AA | Lc -37.5 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A0C8D8
oklch(80.9% 0.048 224.2)
-
Step 400
400
#6AABC5
oklch(70.7% 0.076 225.5)
-
Step 500
500 (this color)
#338FB0
oklch(61% 0.098 225.9)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#11485B
oklch(37.6% 0.064 225.9)
-
Step 950
950
#0D2A35
oklch(26.9% 0.04 226.2)
#338FB0 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) | #7D8CB2 | 0.074 |
| Deuteranopia (no green cones) | #6C80B0 | 0.065 |
| Tritanopia (no blue cones) | #00999A | 0.054 |
| Achromatopsia (no color) | #858585 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338FB0
#338FB0
oklch(61% 0.098 225.9)
- #B4704F
#B4704F
oklch(61.1% 0.098 46.3)
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 #338FB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.038
- Teal Blue #01889F ΔE 0.038
- Off Blue #5684AE ΔE 0.039
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.041
- Teal Green #0A9396 ΔE 0.050
- Faded Blue #658CBB ΔE 0.050
Use #338FB0 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.