#497D91
Closest named color: Cerulean (#457B9D). oklch(56.1% 0.064 224.8), rgb(73, 125, 145).
Aa
Black text reads best on this color (4.62:1).
About this color
#497D91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.064 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. Black text reads best on it, at 4.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.62:1 |
| White text | 4.53:1 |
Values
| HEX | #497D91 |
| RGB | rgb(73, 125, 145) |
| HSL | hsl(197, 33%, 43%) |
| OKLCH | oklch(56.1% 0.064 224.8) |
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 #497D91 | 4.53:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #497D91 | 4.62:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #497D91 text on white | 4.53:1 | AA | Lc 71.4 | Content text, not long reading |
| #497D91 text on black | 4.62:1 | AA | Lc -30.3 | 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 600.
-
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
#CFDCE1
oklch(88.6% 0.016 222.7)
-
Step 300
300
#AEC5CF
oklch(80.9% 0.029 225.8)
-
Step 400
400
#82A7B6
oklch(70.6% 0.046 224.7)
-
Step 500
500
#6291A4
oklch(63% 0.058 225.3)
-
Step 600
600 (this color)
#497D91
oklch(56.1% 0.064 224.8)
-
Step 700
700
#39687A
oklch(49.1% 0.059 224.9)
-
Step 800
800
#2F5563
oklch(42.7% 0.049 223.9)
-
Step 900
900
#2A4651
oklch(37.7% 0.039 224.9)
-
Step 950
950
#19292F
oklch(26.9% 0.024 223.4)
#497D91 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) | #727B92 | 0.050 |
| Deuteranopia (no green cones) | #677391 | 0.044 |
| Tritanopia (no blue cones) | #248383 | 0.043 |
| Achromatopsia (no color) | #767676 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497D91
#497D91
oklch(56.1% 0.064 224.8)
- #956956
#956956
oklch(56.1% 0.064 44.3)
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 #497D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Stormy Blue #507B9C ΔE 0.022
- Metallic Blue #4F738E ΔE 0.029
- Grey Blue #647D8E ΔE 0.031
- Dull Blue #49759C ΔE 0.034
- Ocean #017B92 ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.042
- Teal Blue #01889F ΔE 0.043
Use #497D91 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.