#318EA9
Closest named color: Blue NCS (#118AB2). oklch(60.4% 0.094 221), rgb(49, 142, 169).
Aa
Black text reads best on this color (5.57:1).
About this color
#318EA9 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.094 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.025 away. Black text reads best on it, at 5.57:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #318EA9 |
| RGB | rgb(49, 142, 169) |
| HSL | hsl(194, 55%, 43%) |
| OKLCH | oklch(60.4% 0.094 221) |
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 #318EA9 | 3.76:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #318EA9 | 5.57:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #318EA9 text on white | 3.76:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #318EA9 text on black | 5.57:1 | AA | Lc -36.7 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6AABC1
oklch(70.6% 0.074 221.6)
-
Step 500
500 (this color)
#318EA9
oklch(60.4% 0.094 221)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#114958
oklch(37.7% 0.061 220)
-
Step 950
950
#0D2B34
oklch(27.1% 0.039 220.8)
#318EA9 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) | #7E8AAA | 0.077 |
| Deuteranopia (no green cones) | #6D7EA9 | 0.069 |
| Tritanopia (no blue cones) | #009797 | 0.047 |
| Achromatopsia (no color) | #838383 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #318EA9
#318EA9
oklch(60.4% 0.094 221)
- #B16E55
#B16E55
oklch(60.5% 0.093 41.2)
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 #318EA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.025
- Teal Blue #01889F ΔE 0.030
- Teal Green #0A9396 ΔE 0.041
- Dusty Blue #5A86AD ΔE 0.041
- Off Blue #5684AE ΔE 0.042
- Steel Blue #4682B4 ΔE 0.045
- Cool Blue #4984B8 ΔE 0.045
- Dark Cyan #008B8B ΔE 0.052
Use #318EA9 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.