#398CA3
Closest named color: Teal Blue (#01889F). oklch(59.9% 0.086 219.2), rgb(57, 140, 163).
Aa
Black text reads best on this color (5.45:1).
About this color
#398CA3 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.086 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.028 away. Black text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.45:1 |
| White text | 3.85:1 |
Values
| HEX | #398CA3 |
| RGB | rgb(57, 140, 163) |
| HSL | hsl(193, 48%, 43%) |
| OKLCH | oklch(59.9% 0.086 219.2) |
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 #398CA3 | 3.85:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #398CA3 | 5.45:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #398CA3 text on white | 3.85:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #398CA3 text on black | 5.45:1 | AA | Lc -35.9 | 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
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A3C8D3
oklch(81% 0.042 217.8)
-
Step 400
400
#6FABBD
oklch(70.7% 0.067 218.8)
-
Step 500
500 (this color)
#398CA3
oklch(59.9% 0.086 219.2)
-
Step 600
600
#1B8099
oklch(55.7% 0.094 219.4)
-
Step 700
700
#076C82
oklch(49.1% 0.087 218.8)
-
Step 800
800
#0F586A
oklch(42.7% 0.072 219.4)
-
Step 900
900
#174956
oklch(37.8% 0.056 218.4)
-
Step 950
950
#102B32
oklch(27.1% 0.035 217.1)
#398CA3 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) | #7E88A4 | 0.074 |
| Deuteranopia (no green cones) | #6E7DA3 | 0.065 |
| Tritanopia (no blue cones) | #009493 | 0.045 |
| Achromatopsia (no color) | #828282 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398CA3
#398CA3
oklch(59.9% 0.086 219.2)
- #AC6E59
#AC6E59
oklch(59.9% 0.086 39.5)
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 #398CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.028
- Blue NCS #118AB2 ΔE 0.031
- Teal Green #0A9396 ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.039
- Off Blue #5684AE ΔE 0.041
- Steel Blue #4682B4 ΔE 0.046
- Dark Cyan #008B8B ΔE 0.047
- Cool Blue #4984B8 ΔE 0.047
Use #398CA3 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.