#618DA5
Closest named color: Blue Grey (#758DA3). oklch(62.1% 0.06 232.9), rgb(97, 141, 165).
Aa
Black text reads best on this color (5.86:1).
About this color
#618DA5 is a medium-light, muted blue. In OKLCH its lightness is 62%, its chroma 0.060 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.024 away. Black text reads best on it, at 5.86:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.86:1 |
| White text | 3.58:1 |
Values
| HEX | #618DA5 |
| RGB | rgb(97, 141, 165) |
| HSL | hsl(201, 27%, 51%) |
| OKLCH | oklch(62.1% 0.06 232.9) |
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 #618DA5 | 3.58:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #618DA5 | 5.86:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #618DA5 text on white | 3.58:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #618DA5 text on black | 5.86:1 | AA | Lc -38.3 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AFC4D1
oklch(80.9% 0.029 234.9)
-
Step 400
400
#84A6BA
oklch(70.7% 0.047 234.1)
-
Step 500
500 (this color)
#618DA5
oklch(62.1% 0.06 232.9)
-
Step 600
600
#4A7A94
oklch(55.6% 0.066 233.4)
-
Step 700
700
#3B677E
oklch(49.2% 0.061 232.7)
-
Step 800
800
#315466
oklch(42.7% 0.05 232)
-
Step 900
900
#2C4553
oklch(37.6% 0.039 233.8)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#618DA5 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) | #828CA6 | 0.042 |
| Deuteranopia (no green cones) | #7884A5 | 0.036 |
| Tritanopia (no blue cones) | #479495 | 0.045 |
| Achromatopsia (no color) | #878787 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618DA5
#618DA5
oklch(62.1% 0.06 232.9)
- #A47D64
#A47D64
oklch(62.1% 0.061 54)
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 #618DA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.024
- Silver Lake Blue #778DA9 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.028
- Light Slate Gray #778899 ΔE 0.030
- Steel #738595 ΔE 0.032
- Faded Blue #658CBB ΔE 0.036
- Off Blue #5684AE ΔE 0.036
- Slate Gray #708090 ΔE 0.042
Use #618DA5 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.