#398A8D
Closest named color: Dark Cyan (#008B8B). oklch(58.5% 0.078 198.6), rgb(57, 138, 141).
Aa
Black text reads best on this color (5.19:1).
About this color
#398A8D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.078 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.023 away. Black text reads best on it, at 5.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #398A8D |
| RGB | rgb(57, 138, 141) |
| HSL | hsl(182, 42%, 39%) |
| OKLCH | oklch(58.5% 0.078 198.6) |
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 #398A8D | 4.04:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #398A8D | 5.19:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #398A8D text on white | 4.04:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #398A8D text on black | 5.19:1 | AA | Lc -34.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A7C8C9
oklch(80.9% 0.035 198.7)
-
Step 400
400
#76ACAE
oklch(70.8% 0.057 198.9)
-
Step 500
500
#50979A
oklch(63.2% 0.072 199.1)
-
Step 600
600 (this color)
#398A8D
oklch(58.5% 0.078 198.6)
-
Step 700
700
#206D70
oklch(49.1% 0.073 198.8)
-
Step 800
800
#1E595B
oklch(42.7% 0.06 198.3)
-
Step 900
900
#1F494B
oklch(37.7% 0.047 199.5)
-
Step 950
950
#132B2C
oklch(27% 0.03 199.1)
#398A8D 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) | #81848D | 0.080 |
| Deuteranopia (no green cones) | #747A8E | 0.076 |
| Tritanopia (no blue cones) | #008F8B | 0.026 |
| Achromatopsia (no color) | #7E7E7E | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398A8D
#398A8D
oklch(58.5% 0.078 198.6)
- #A5696A
#A5696A
oklch(58.6% 0.077 18.6)
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 #398A8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.023
- Teal Green #0A9396 ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.030
- Teal Blue #01889F ΔE 0.036
- Sea #3C9992 ΔE 0.044
- Teal #008080 ΔE 0.045
- Blue Green #0F9B8E ΔE 0.051
- Grey Blue #647D8E ΔE 0.055
Use #398A8D 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.