#618B9A
Closest named color: Steel (#738595). oklch(61.2% 0.051 222.2), rgb(97, 139, 154).
Aa
Black text reads best on this color (5.66:1).
About this color
#618B9A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.051 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.025 away. Black text reads best on it, at 5.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.66:1 |
| White text | 3.70:1 |
Values
| HEX | #618B9A |
| RGB | rgb(97, 139, 154) |
| HSL | hsl(196, 23%, 49%) |
| OKLCH | oklch(61.2% 0.051 222.2) |
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 #618B9A | 3.70:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #618B9A | 5.66:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #618B9A text on white | 3.70:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #618B9A text on black | 5.66:1 | AA | Lc -37.1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B0C5CC
oklch(81% 0.025 219.8)
-
Step 400
400
#86A7B3
oklch(70.8% 0.04 222)
-
Step 500
500 (this color)
#618B9A
oklch(61.2% 0.051 222.2)
-
Step 600
600
#4D7B8B
oklch(55.6% 0.056 222.1)
-
Step 700
700
#3E6876
oklch(49.2% 0.052 221.3)
-
Step 800
800
#335460
oklch(42.6% 0.043 223.1)
-
Step 900
900
#2D464E
oklch(37.7% 0.034 219.9)
-
Step 950
950
#1B292E
oklch(27% 0.021 222)
#618B9A 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) | #82899B | 0.042 |
| Deuteranopia (no green cones) | #79829A | 0.038 |
| Tritanopia (no blue cones) | #4C9090 | 0.033 |
| Achromatopsia (no color) | #858585 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618B9A
#618B9A
oklch(61.2% 0.051 222.2)
- #9F7A6C
#9F7A6C
oklch(61.2% 0.051 41.7)
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 #618B9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.025
- Light Slate Gray #778899 ΔE 0.027
- Blue Grey #758DA3 ΔE 0.030
- Steel Grey #6F828A ΔE 0.031
- Slate Gray #708090 ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.037
- Silver Lake Blue #778DA9 ΔE 0.037
- Grey Blue #647D8E ΔE 0.039
Use #618B9A 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.