#398A9D
Closest named color: Teal Blue (#01889F). oklch(59.2% 0.083 215.8), rgb(57, 138, 157).
Aa
Black text reads best on this color (5.29:1).
About this color
#398A9D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.083 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.024 away. Black text reads best on it, at 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #398A9D |
| RGB | rgb(57, 138, 157) |
| HSL | hsl(191, 47%, 42%) |
| OKLCH | oklch(59.2% 0.083 215.8) |
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 #398A9D | 3.96:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #398A9D | 5.29:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #398A9D text on white | 3.96:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #398A9D text on black | 5.29:1 | AA | Lc -34.9 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A6C7D0
oklch(80.8% 0.038 216.1)
-
Step 400
400
#75AAB8
oklch(70.6% 0.059 216.1)
-
Step 500
500
#4E95A7
oklch(63.1% 0.076 216.3)
-
Step 600
600 (this color)
#398A9D
oklch(59.2% 0.083 215.8)
-
Step 700
700
#1E6B7C
oklch(49% 0.077 215.9)
-
Step 800
800
#1C5865
oklch(42.8% 0.064 215)
-
Step 900
900
#1E4852
oklch(37.6% 0.049 215.6)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#398A9D 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) | #7D869E | 0.073 |
| Deuteranopia (no green cones) | #6E7B9D | 0.066 |
| Tritanopia (no blue cones) | #009190 | 0.040 |
| Achromatopsia (no color) | #808080 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398A9D
#398A9D
oklch(59.2% 0.083 215.8)
- #A96C5B
#A96C5B
oklch(59.2% 0.083 36.3)
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 #398A9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.024
- Blue NCS #118AB2 ΔE 0.036
- Teal Green #0A9396 ΔE 0.036
- Dark Cyan #008B8B ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.044
- Cerulean #457B9D ΔE 0.045
- Off Blue #5684AE ΔE 0.045
- Stormy Blue #507B9C ΔE 0.046
Use #398A9D 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.