#618A91
Closest named color: Steel Grey (#6F828A). oklch(60.6% 0.046 209.2), rgb(97, 138, 145).
Aa
Black text reads best on this color (5.55:1).
About this color
#618A91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.046 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.026 away. Black text reads best on it, at 5.55:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.55:1 |
| White text | 3.78:1 |
Values
| HEX | #618A91 |
| RGB | rgb(97, 138, 145) |
| HSL | hsl(189, 20%, 47%) |
| OKLCH | oklch(60.6% 0.046 209.2) |
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 #618A91 | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #618A91 | 5.55:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #618A91 text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #618A91 text on black | 5.55:1 | AA | Lc -36.3 | 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
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#B1C5C8
oklch(80.9% 0.022 207.6)
-
Step 400
400
#87A7AD
oklch(70.6% 0.036 210.3)
-
Step 500
500 (this color)
#618A91
oklch(60.6% 0.046 209.2)
-
Step 600
600
#4F7C83
oklch(55.6% 0.05 208.2)
-
Step 700
700
#40686F
oklch(49% 0.046 209.8)
-
Step 800
800
#35555A
oklch(42.7% 0.038 208.3)
-
Step 900
900
#2E464A
oklch(37.6% 0.03 209)
-
Step 950
950
#1B292B
oklch(26.9% 0.019 207.1)
#618A91 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) | #838791 | 0.044 |
| Deuteranopia (no green cones) | #7B8191 | 0.040 |
| Tritanopia (no blue cones) | #508E8C | 0.024 |
| Achromatopsia (no color) | #838383 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618A91
#618A91
oklch(60.6% 0.046 209.2)
- #9C7872
#9C7872
oklch(60.6% 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 #618A91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.026
- Steel #738595 ΔE 0.028
- Light Slate Gray #778899 ΔE 0.032
- Slate Gray #708090 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.037
- Grey Blue #647D8E ΔE 0.037
- Blue Grey #758DA3 ΔE 0.039
- Battleship Grey #6B7C85 ΔE 0.039
Use #618A91 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.