#6597AB
Closest named color: Blue Grey (#758DA3). oklch(64.8% 0.061 225.1), rgb(101, 151, 171).
Aa
Black text reads best on this color (6.56:1).
About this color
#6597AB is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.061 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.031 away. Black text reads best on it, at 6.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #6597AB |
| RGB | rgb(101, 151, 171) |
| HSL | hsl(197, 29%, 53%) |
| OKLCH | oklch(64.8% 0.061 225.1) |
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 #6597AB | 3.19:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #6597AB | 6.56:1 | AA | Lc 45.0 | Non-text elements, placeholder text |
| #6597AB text on white | 3.19:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #6597AB text on black | 6.56:1 | AA | Lc -42.6 | 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
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CF
oklch(80.9% 0.03 224.8)
-
Step 400
400
#81A7B7
oklch(70.6% 0.047 225.6)
-
Step 500
500 (this color)
#6597AB
oklch(64.8% 0.061 225.1)
-
Step 600
600
#457C91
oklch(55.7% 0.067 224.9)
-
Step 700
700
#36687B
oklch(49% 0.062 225)
-
Step 800
800
#2E5564
oklch(42.7% 0.051 225)
-
Step 900
900
#294652
oklch(37.7% 0.04 226.3)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#6597AB 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) | #8C95AC | 0.048 |
| Deuteranopia (no green cones) | #818CAB | 0.044 |
| Tritanopia (no blue cones) | #499D9D | 0.042 |
| Achromatopsia (no color) | #909090 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6597AB
#6597AB
oklch(64.8% 0.061 225.1)
- #AF8370
#AF8370
oklch(64.8% 0.061 44.4)
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 #6597AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.031
- Cadet Blue #5F9EA0 ΔE 0.031
- Silver Lake Blue #778DA9 ΔE 0.033
- Greyblue #77A1B5 ΔE 0.038
- Light Slate Gray #778899 ΔE 0.045
- Faded Blue #658CBB ΔE 0.046
- Cool Gray #8D99AE ΔE 0.051
- Steel #738595 ΔE 0.052
Use #6597AB 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.