#618990
Closest named color: Steel Grey (#6F828A). oklch(60.3% 0.045 209.5), rgb(97, 137, 144).
Aa
Black text reads best on this color (5.48:1).
About this color
#618990 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.045 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.024 away. Black text reads best on it, at 5.48:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.48:1 |
| White text | 3.82:1 |
Values
| HEX | #618990 |
| RGB | rgb(97, 137, 144) |
| HSL | hsl(189, 20%, 47%) |
| OKLCH | oklch(60.3% 0.045 209.5) |
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 #618990 | 3.82:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #618990 | 5.48:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #618990 text on white | 3.82:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #618990 text on black | 5.48:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DBDD
oklch(88.4% 0.012 209.8)
-
Step 300
300
#B1C5C8
oklch(80.9% 0.022 207.6)
-
Step 400
400
#88A7AD
oklch(70.7% 0.035 210.7)
-
Step 500
500 (this color)
#618990
oklch(60.3% 0.045 209.5)
-
Step 600
600
#507C83
oklch(55.7% 0.05 208.5)
-
Step 700
700
#40686F
oklch(49% 0.046 209.8)
-
Step 800
800
#35555A
oklch(42.7% 0.038 208.3)
-
Step 900
900
#2F464A
oklch(37.7% 0.029 209.5)
-
Step 950
950
#1C292B
oklch(27% 0.018 207.9)
#618990 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) | #828690 | 0.043 |
| Deuteranopia (no green cones) | #7A8090 | 0.039 |
| Tritanopia (no blue cones) | #508D8B | 0.024 |
| Achromatopsia (no color) | #828282 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618990
#618990
oklch(60.3% 0.045 209.5)
- #9B7771
#9B7771
oklch(60.3% 0.046 29.3)
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 #618990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.024
- Steel #738595 ΔE 0.027
- Slate Gray #708090 ΔE 0.031
- Light Slate Gray #778899 ΔE 0.033
- Grey Blue #647D8E ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.041
Use #618990 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.